Pluto’s moon Nix (left), shown here in enhanced color as imaged by the New Horizons Ralph instrument, has a reddish spot that has attracted the interest of mission scientists. The data were obtained on the morning of July 14, 2015, and received on the ground on July 18. At the time the observations were taken New Horizons was about 102,000 miles (165,000 km) from Nix. The image shows features as small as approximately 2 miles (3 kilometers) across on Nix, which is estimated to be 26 miles (42 kilometers) long and 22 miles (36 kilometers) wide.
Pluto's small, irregularly shaped moon Hydra (right) is revealed in this black and white image taken from New Horizons' LORRI instrument on July 14, 2015 from a distance of about 143,000 miles (231,000 kilometers). Features as small as 0.7 miles (1.2 kilometers) are visible on Hydra, which measures 34 miles (55 kilometers) in length.
Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute
Of course they’ve always been real worlds. They just never looked that way. We’ve only known of their existence since 2005, when astronomers with the Pluto Companion Search Team spotted them using the Hubble Space Telescope. Never more than faint points of light, each is now revealed as a distinct, if tiny, world.
“Before last week, Hydra was just a faint point of light, so it’s a surreal experience to see it become an actual place, as we see its shape and spot recognizable features on its surface for the first time,” said New Horizons mission science collaborator Ted Stryk.
Nix and Hydra compared to “giants” Pluto and its largest moon Charon. Pluto measures 1,473 miles in diameter and Charon 790 miles. A. Stern (SwRI) and Z. Levay (STScI)
Nix looks like a strawberry-flavored jelly bean, but that reddish region with its vaguely bulls-eye shape hints at a possible crater on this 26 miles (42 km) long by 22 miles (36 km) wide moon. Hydra, which measures 34 x 25 miles (55 x 40 km), displays two large craters, one tilted to face the Sun (top) and the other almost fully in shadow. Differences in brightness across Hydra suggest differences in surface composition.
Now we’ve seen three of Pluto’ family of five satellites. Expect images of Pluto’s most recently discovered moons, Styx and Kerberos, to be transmitted to Earth no later than mid-October.
Formation of Pluto’s moons. 1: a Kuiper belt object approaches Pluto; 2: it impacts Pluto; 3: a dust ring forms around Pluto; 4: the debris aggregates to form Charon; 5: Pluto and Charon relax into spherical bodies. Smaller pieces became the irregularly-shaped moons Nix, Hydra, Kerberos and Styx. Credit: Wikipedia
All of Pluto’s satellites are believed to have been created in what’s now referred to as “The Big Whack”, a long-ago collision between Pluto and another planetary body. A similar scenario probably played out at Earth as well, leading to the formation of our own Moon. In Pluto’s case, most of the material pulled together to form Charon; the leftover chips became the smaller satellites. Their sizes are too small for self-gravity to crush them into spheres, hence their irregular shapes. The moons’ neatly circular orbits about Pluto suggest they formed together rather than being captured willy-nilly from the Kuiper Belt.
A newly discovered mountain range lies near the southwestern margin of Pluto’s Tombaugh Regio (Tombaugh Region), situated between bright, icy plains and dark, heavily-cratered terrain (left). This image taken on July 14, 2015 from a distance of 48,000 miles (77,000 km) and received on Earth on July 20. Features as small as a half-mile (1 km) across are visible. Credits: NASA/JHUAPL/SWRI
Update: This just in. Take a look at this new close-up of Pluto that features a newly discovered mountain range in southwestern Tombaugh Regio. Sure looks like ice flows. This is a complex little dwarf planet!
Below we have a special treat just in this morning (July 22) — mosaics and montages of Pluto and family created by Damian Peach from New Horizons images. Be sure to click to see the hi-res versions. Enjoy!
Close up mosaic of a part of Tombaugh Regio created by Damian Peach using New Horizons imageryThe Pluto system with Charon (upper right), Nix and Hydra. Credit: NASA, Damian PeachViews of Pluto during New Horizons’ approach. Credit: NASA/Damian PeachCharon approach from New Horizons. Credit: NASA/Damian Peach
Hi Res mosaic of ‘Tombaugh Regio’ shows the heart-shaped region on Pluto and focuses on icy mountain ranges of ‘Norgay Montes’ and ice plains of ‘Sputnik Planum.’ The new mosaic combines highest resolution imagery captured by NASA’s New Horizons LORRI imager during history making closest approach flyby on July 14, 2015, draped over a wider, lower resolution view of Tombaugh Regio. Inset at left shows possible wind streaks. Inset at right shows global view of Pluto with location of huge heart-shaped region in context. Annotated with place names. Credit: NASA/JHUAPL/SWRI/ Marco Di Lorenzo/Ken Kremer/kenkremer.com
APPLIED PHYSICS LABORATORY, LAUREL, MD – The highest resolution images ever taken of Pluto by humanity’s first spacecraft ever to visit the last planet in our solar system revealed unanticipated new discoveries of ice mountains as tall as the Rockies and vast craterless plains spanning hundreds of miles (kilometers) across – are now shown in our newly created context mosaic (featured above and below) of the heart-shaped ‘Tombaugh Regio’ area that dominates the alien planet’s surface.
This first high resolution surface mosaic was created from a newly unveiled series of black and white images centered in the Heart of Pluto’s huge ‘Heart, including the ice mountains of ‘Sputnik Planum’ and icy plains of ‘Norgay Montes.’
They were captured by New Horizons’ high resolution Long Range Reconnaissance Imager (LORRI) on July 14 as the probe barreled past the Pluto-Charon binary planet system only four days ago on Tuesday, July 14, at over 31,000 mph (49,600 kph).
These highest resolution LORRI images focused on the “Heart of the Heart” of Pluto have now been stitched into a mosaic by the image processing team of Marco Di Lorenzo and Ken Kremer.
Pluto’s bright heart-shaped region has now been informally renamed “Tombaugh Regio,’ announced John Spencer, New Horizons science team co-investigator at the post flyby media briefing on July 15.
The mosaic of Pluto’s ‘Tombaugh Regio’ is based on the initial imagery released so far as of July 17.
This annotated view of a portion of Pluto’s Sputnik Planum (Sputnik Plain), named for Earth’s first artificial satellite, shows an array of enigmatic features. The surface appears to be divided into irregularly shaped segments that are ringed by narrow troughs, some of which contain darker materials. Features that appear to be groups of mounds and fields of small pits are also visible. This image was acquired by the Long Range Reconnaissance Imager (LORRI) on July 14 from a distance of 48,000 miles (77,000 kilometers). Features as small as a half-mile (1 kilometer) across are visible. Credits: NASA/JHUAPL/SWRI
A pair of high resolution LORRI images was aimed at areas now informally named Norgay Montes (Norgay Mountains) and Sputnik Planum (Sputnik Plain).
Norgay Montes is informally named for Tenzing Norgay, one of the first two humans to reach the summit of Mount Everest, along with Sir Edmund Hillary. Sputnik Planum is informally named for Earth’s first artificial satellite launched by the Soviet Union in 1957.
The two LORRI images are draped over a wider, lower resolution view of Tombaugh Regio – in annotated and unannotated versions. This is highest resolution currently available.
To the left of the mosaic are two small inserts showing possible “wind streaks” say the researchers.
To the right of the mosaic is a global view of Pluto showing the location of Tombaugh Regio and also outlined to show the precise location of the high resolution LORRI mosaic.
Hi Res mosaic of ‘Tombaugh Regio’ shows the heart-shaped region on Pluto and focuses on icy mountain ranges of ‘Norgay Montes’ and ice plains of ‘Sputnik Planum.’ The new mosaic combines highest resolution imagery captured by NASA’s New Horizons LORRI imager during history making closest approach flyby on July 14, 2015. Inset at left shows possible wind streaks. Inset at right shows global view of Pluto with location of huge heart-shaped region in context. Credit: NASA/JHUAPL/SWRI/ Marco Di Lorenzo/Ken Kremer/kenkremer.com
The LORRI images were taken from a distance of 48,000 miles (77,000 kilometers) from the surface of the planet about 1.5 hours prior to the closest approach at 7:49 a.m. EDT on July 14. The images easily resolve structures smaller than a mile across.
The frozen region of Norgay Montes is situated north of Pluto’s icy mountain range at Sputnik Planum.
“This terrain is not easy to explain,” said Jeff Moore, leader of the New Horizons Geology, Geophysics and Imaging Team (GGI) at NASA’s Ames Research Center in Moffett Field, California.
“The discovery of vast, craterless, very young plains on Pluto exceeds all pre-flyby expectations.”
“The landscape is astoundingly amazing. There are a few ancient impact craters on Pluto. But other areas like “Tombaugh Regio” show no craters. The landform change processes are occurring into current geologic times.”
“There are no impact craters in a frozen area north of Pluto’s icy mountains we are now informally calling ‘Sputnik Planum’ after Earth’s first artificial satellite.”
New close-up images of a region near Pluto’s equator reveal a giant surprise — a range of youthful mountains rising as high as 11,000 feet (3,500 meters) above the surface of the icy body. Credits: NASA/JHU APL/SwRI
‘Sputnik Planum’ is composed of a broken surface of irregularly-shaped segments. The polygonal shaped areas are roughly 12 miles (20 kilometers) across, bordered by what appear to be shallow troughs based on a quick look at the data.
The mountain ranges height rival those of the Rockies, says Moore.
The new LORRI close-ups show the icy mountain range has peaks jutting as high as 11,000 feet (3,500 meters) above the surface, announced John Spencer, New Horizons science team co-investigator at the media briefing.
“It’s a very young surface, probably formed less than 100 million years old,’ said Spencer. “It may be active now.”
New Horizons science team co-investigator John Spencer examines print of the newest Pluto image taken on July 13, 2015 after the successful Pluto flyby. Credit: Ken Kremer/kenkremer.com
“Judging from the absence of impact craters, it’s clear that Sputnik Planum couldn’t possibly be more than 100 million years old, and possibly is still being shaped to this day by geologic processes,” noted Moore. “This could be only a week old for all we know.”
During the fast flyby encounter, the New Horizons spacecraft pointed its suite of seven science instruments exclusively on all the bodies in the Pluto system, to maximize the capture of scientific data, as quickly as possible, and store it onto its two solid state digital recorders for later playback.
A major challenge for the mission is the rather slow “downlink” transmission of data back to Mission Control on Earth. Since the average “downlink” is only about 2 kilobits per second via its two transmitters, it will take about 16 months to send all the flyby data back to Earth.
Therefore the team has carefully selected just a few of the highest resolution images and other key instrument data for quick playback. The remaining flyby data will be prioritized for streaming.
“Over 50 gigabits of data were collected during the encounter and flyby periods,” New Horizons principal investigator Alan Stern of the Southwest Research Institute, Boulder, Colorado, said during the July 17 media briefing.
“So far less than 1 gigabit of data has been returned.”
New Horizons discovered that Pluto is the biggest object in the outer solar system and thus the ‘King of the Kuiper Belt’.
The Kuiper Belt comprises the third and outermost region of worlds in our solar system.
If the spacecraft remains healthy as expected, the science team plans to target New Horizons to fly by another smaller Kuiper Belt Object (KBO) as soon as 2018.
Pluto Explored at Last. The New Horizons mission team celebrates successful flyby of Pluto in the moments after closest approach at 7:49 a.m. EDT on July 14, 2015. New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, CO., left, Johns Hopkins University Applied Physics Laboratory (APL) Director Ralph Semmel, center, and New Horizons Co-Investigator Will Grundy Lowell Observatory hold an enlarged print of an U.S. stamp with their suggested update after Pluto became the final planet in our solar system to be explored by an American space probe (crossing out the words ‘not yet’) – at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Credit: Ken Kremer/kenkremer.com
Watch for Ken’s continuing coverage of the Pluto flyby. He was onsite reporting live on the flyby and media briefings for Universe Today from the Johns Hopkins University Applied Physics Laboratory (APL), in Laurel, Md.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
NASA Associate Administrator for the Science Mission Directorate John Grunsfeld, left, New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, CO, second from left, New Horizons Mission Operations Manager Alice Bowman of the Johns Hopkins University Applied Physics Laboratory (APL), second from right, and New Horizons Project Manager Glen Fountain of APL, right, are seen at the conclusion of a press conference after the team received confirmation from the spacecraft that it has completed the flyby of Pluto, Tuesday, July 14, 2015 at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Credit: Ken Kremer/kenkremer.com
This annotated view of a portion of Pluto’s Sputnik Planum (Sputnik Plain), named for Earth’s first artificial satellite, shows an array of enigmatic features. The surface appears to be divided into irregularly shaped segments that are ringed by narrow troughs, some of which contain darker materials. Features that appear to be groups of mounds and fields of small pits are also visible. This image was acquired by the Long Range Reconnaissance Imager (LORRI) on July 14 from a distance of 48,000 miles (77,000 kilometers). Features as small as a half-mile (1 kilometer) across are visible. Credits: NASA/JHUAPL/SWRI
This annotated view of a portion of Pluto’s Sputnik Planum (Sputnik Plain), named for Earth’s first artificial satellite, shows an array of enigmatic features. The surface appears to be divided into irregularly shaped segments that are ringed by narrow troughs, some of which contain darker materials. Features that appear to be groups of mounds and fields of small pits are also visible. This image was acquired by the Long Range Reconnaissance Imager (LORRI) on July 14 from a distance of 48,000 miles (77,000 kilometers). Features as small as a half-mile (1 kilometer) across are visible. Credits: NASA/JHUAPL/SWRI
See 3 image mosaic below[/caption]
The jaw dropping new imagery of young plains of water ice was publicly released today, July 17, by NASA and scientists leading the New Horizons mission during a media briefing, and has already resulted in ground breaking new scientific discoveries at the last planet in our solar system to be visited by a spacecraft from Earth.
“We have now visited every planet in our solar system with American spacecraft,” said NASA Administrator Charles Bolden. “These findings are already causing us to rethink the dynamics of interior geologic processes.”
New data and dazzling imagery are now from streaming back some 3 billion miles across interplanetary space to mission control on Earth and researchers eagerly awaiting the fruits of more than two decades of hard labor to get to this once-in-a-lifetime opportunity.
“I can’t wait for the new discoveries!” exclaimed Bolden at today’s media briefing.
“Over 50 gigabits of data were collected during the encounter and flyby periods,” New Horizons principal investigator Alan Stern of the Southwest Research Institute, Boulder, Colorado, said during the media briefing.
“So far less than 1 gigabit of data has been returned.”
It will take some 16 months for all the Pluto flyby data to be transmitted back to Earth.
And the team has not been disappointed because the results so far shows Pluto to possess tremendously varied terrain that “far exceed our expectations.”
Video Caption: In the center left of Pluto’s vast heart-shaped feature – informally named “Tombaugh Regio” – lies a vast, craterless plain that appears to be no more than 100 million years old, and is possibly still being shaped by geologic processes. This frozen region is north of Pluto’s icy mountains and has been informally named Sputnik Planum (Sputnik Plain), after Earth’s first artificial satellite. Credits: NASA/JHUAPL/SWRI
Two new high resolution images captured by the probes Long Range Reconnaissance Imager (LORRI) on July 14 were released today and taken from a distance of 48,000 miles (77,000 kilometers). Features as small as one-half mile (1 kilometer) across are visible in the images – shown above and below.
They were snapped from frozen region lying north of Pluto’s icy mountains, in the center-left of the heart feature, informally named “Tombaugh Regio” (Tombaugh Region) after Clyde Tombaugh, who discovered Pluto in 1930.
“This terrain is not easy to explain,” said Jeff Moore, leader of the New Horizons Geology, Geophysics and Imaging Team (GGI) at NASA’s Ames Research Center in Moffett Field, California.
“The discovery of vast, craterless, very young plains on Pluto exceeds all pre-flyby expectations.”
“The landscape is astounding. There are a few ancient impact craters on Pluto. But other areas like “Tombaugh Regio” show no craters. The landform change processes are occurring into current geologic times.”
“There are no impact craters in a frozen area north of Pluto’s icy mountains we are now informally calling ‘Sputnik Planum’ after Earth’s first artificial satellite.”
‘Sputnik Planum’ is composed of a broken surface of irregularly-shaped segments. The polygonal shaped areas are roughly 12 miles (20 kilometers) across, bordered by what appear to be shallow troughs based on a quick look at the data.
Notably, some of the clumps are filled with mysterious darker material. Hills are also visible in some areas, which may have been pushed up. Etched areas on the surface may have been formed by sublimation process where the water ice turns directly from the solid to the gas phase due to the extremely negligible atmosphere pressure.
In some places there are also streaks that may have formed from windblown processes and pitted areas.
Three image mosaic of ‘Tombaugh Regio,’ Pluto’s heart-shaped region, combining highest resolution imagery captured by NASA’s New Horizons LORRI imager during closest approach flyby on July 14, 2015. Credits: NASA/JHUAPL/SWRI. Additional processing Ken Kremer/Marco Di Lorenzo
“It’s just pure coincidence that we got the highest resolution data at Sputnik Planum which is of the most interest scientifically,” Moore noted.
Moore indicated that the team is working on a pair of theories as to how these polygonal segments were formed.
“The irregular shapes may be the result of the contraction of surface materials, similar to what happens when mud dries. Alternatively, they may be a product of convection, similar to wax rising in a lava lamp. On Pluto, convection would occur within a surface layer of frozen carbon monoxide, methane and nitrogen, driven by the scant warmth of Pluto’s interior,” Moore explained.
Pluto’s polygons look remarkably similar to the Martian polygons upon which NASA’s Phoenix lander touched down on in 2008 and dug into. Perhaps they were formed by similar mechanisms or difference ones, contraction or convection, Moore told me during the briefing.
As of yesterday, New Horizons spacecraft completed and exited the Pluto encounter phase, said Stern. “We are now collecting departure science.”
New Horizons is already over 3 million miles beyond Pluto and heading to its next yet to be determined target in the Kuiper Belt.
“With the flyby in the rearview mirror, a decade-long journey to Pluto is over –but, the science payoff is only beginning,” said Jim Green, director of Planetary Science at NASA Headquarters in Washington.
“Data from New Horizons will continue to fuel discovery for years to come.”
Counting down to less than 3 minutes from New Horizons closest approach to Pluto, Jim Green, NASA Planetary Science Division Director, addresses the team, guests and media on Tuesday, July 14, 2015 at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Credit: Ken Kremer/kenkremer.com
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Pluto Explored at Last
The New Horizons mission team celebrates successful flyby of Pluto in the moments after closest approach at 7:49 a.m. EDT on July 14, 2015. New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, CO., left, Johns Hopkins University Applied Physics Laboratory (APL) Director Ralph Semmel, center, and New Horizons Co-Investigator Will Grundy Lowell Observatory hold an enlarged print of an U.S. stamp with their suggested update after Pluto became the final planet in our solar system to be explored by an American space probe (crossing out the words ‘not yet’) – at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Credit: Ken Kremer/kenkremer.comIn the center left of Pluto’s vast heart-shaped feature – informally named “Tombaugh Regio” – lies a vast, craterless plain that appears to be no more than 100 million years old, and is possibly still being shaped by geologic processes. This frozen region is north of Pluto’s icy mountains and has been informally named Sputnik Planum (Sputnik Plain), after Earth’s first artificial satellite. The surface appears to be divided into irregularly-shaped segments that are ringed by narrow troughs. Features that appear to be groups of mounds and fields of small pits are also visible. This image was acquired by the Long Range Reconnaissance Imager (LORRI) on July 14 from a distance of 48,000 miles (77,000 kilometers). Features as small as one-half mile (1 kilometer) across are visible. Credits: NASA/JHUAPL/SWRI
This new image of an area on Pluto's largest moon Charon has a captivating feature -- a depression with a peak in the middle, shown here in the upper left corner of the inset. The image shows an area approximately 240 miles (390 kilometers) from top to bottom, including few visible craters. The image was taken at approximately 6:30 a.m. EDT on July 14, 2015, about 1.5 hours before closest approach to Pluto, from a range of 49,000 miles (79,000 kilometers). Credits: NASA-JHUAPL-SwRI
This new image of an area on Pluto’s largest moon Charon has a captivating feature — a depression with a peak in the middle, shown here in the upper left corner of the inset. The image shows an area approximately 240 miles (390 kilometers) from top to bottom, including few visible craters. The image was taken at approximately 6:30 a.m. EDT on July 14, 2015, about 1.5 hours before closest approach to Pluto, from a range of 49,000 miles (79,000 kilometers). Credits: NASA-JHUAPL-SwRI
Story updated[/caption]
APPLIED PHYSICS LABORATORY, LAUREL, MD – A mysterious mountain in the middle of a moat on Pluto’s biggest moon Charon, has captivated and baffled scientists leading NASA’s New Horizons mission which made history when it became the first spacecraft to visit our solar system’s most distant planet barely two days ago on Tuesday morning, July 14, 2015.
NASA released the first close-up image of Charon today (July 16), shown above, and it has the geology team scratching their heads in amazement and wonder. They can’t figure out the nature of a big mountain set inside a moat.
The new image shows a depression with a mountain peak in the middle.
“The most intriguing feature is a large mountain sitting in a moat,” said Jeff Moore with NASA’s Ames Research Center, Moffett Field, California, who leads New Horizons’ Geology, Geophysics and Imaging team. “This is a feature that has geologists stunned and stumped.”
The location of the “mountain in a moat” is shown in the inset of a global view of Charon.
The new high resolution image of Charon was taken at approximately 6:30 a.m. EDT (10:30 UTC), barely an hour and a half before the piano-shaped spacecraft’s closest approach to Pluto on July 14, 2015, from a range of only 49,000 miles (79,000 kilometers).
The image was captured by New Horizons’ high resolution Long Range Reconnaissance Imager (LORRI).
Pluto Explored at Last
The New Horizons mission team celebrates successful flyby of Pluto in the moments after closest approach at 7:49 a.m. EDT on July 14, 2015. New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, CO., left, Johns Hopkins University Applied Physics Laboratory (APL) Director Ralph Semmel, center, and New Horizons Co-Investigator Will Grundy Lowell Observatory hold an enlarged print of an U.S. stamp with their suggested update after Pluto became the final planet in our solar system to be explored by an American space probe (crossing out the words ‘not yet’) – at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Credit: Ken Kremer/kenkremer.com
A much sharper view is yet to come, because the image is heavily compressed.
“Sharper versions are anticipated when the full-fidelity data from New Horizons’ Long Range Reconnaissance Imager (LORRI) are returned to Earth,” say NASA officials.
The area in the LORRI image comprises an area approximately 240 miles (390 kilometers) from top to bottom.
Crisp new view of Pluto’s largest moon, Charon shows a swath of cliffs and troughs stretches about 600 miles (1,000 kilometers) from left to right, suggesting widespread fracturing of Charon’s crust, likely a result of internal processes. At upper right, along the moon’s curving edge, is a canyon estimated to be 4 to 6 miles (7 to 9 kilometers) deep. Credit: NASA-JHUAPL-SwRI
Notably there are few visible craters “indicating a relatively young surface that has been reshaped by geologic activity.”
And a “swath of cliffs and troughs stretching about 600 miles (1,000 kilometers) suggests widespread fracturing of Charon’s crust, likely the result of internal geological processes,” notes the team.
The Texas-sized moon measures about 750 miles (1200 kilometers) across, about half the diameter of Pluto. Pluto spans 1,471 miles (2,368 km) across.
After a nine year voyage through interplanetary space, New Horizons barreled past the Pluto system on Tuesday, July 14 for a history making first ever flyby at over 31,000 mph (49,600 kph), and survived the passage by swooping barely 7,750 miles (12,500 kilometers) above the planet’s amazingly diverse surface at 7:49 a.m. EDT. It passed about 17,900 miles (28,800 kilometers) from Charon during closest approach.
NASA Administrator Charles Bolden congratulates the New Horizons team after successful Pluto flyby on July 14, 2015, to cheering crowd at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland, during live NASA TV media briefing. Credit: Ken Kremer/kenkremer.com
Watch for Ken’s continuing coverage of the Pluto flyby on July 14. He was onsite reporting live on the flyby and media briefing from the Johns Hopkins University Applied Physics Laboratory (APL).
New images will be released on Friday, July 17 – watch for my story.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Chasms, craters, and a dark north polar region are revealed in this image of Pluto’s largest moon Charon taken by New Horizons on July 11, 2015. The annotated version includes a diagram showing Charon’s north pole, equator, and central meridian, with the features highlighted. Credits: NASA/JHUAPL/SWRI
New close-up images of a region near Pluto’s equator reveal a giant surprise -- a range of youthful mountains rising as high as 11,000 feet (3,500 meters) above the surface of the icy body. Credits: NASA/JHU APL/SwRI
New close-up images of a region near Pluto’s equator reveal a giant surprise — a range of youthful mountains rising as high as 11,000 feet (3,500 meters) above the surface of the icy body. Credits: NASA/JHU APL/SwRI
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APPLIED PHYSICS LABORATORY, LAUREL, MD – Scientists leading NASA’s historic New Horizons mission to the Pluto system announced the first of what is certain to be a tidal wave of new discoveries, including the totally unexpected finding of young ice mountains at Pluto and crispy clear views of young fractures on its largest moon Charon, at a NASA media briefing today (July 15) at the Applied Physics Laboratory (APL) in Laurel, Maryland.
A treasure trove of long awaited data has begun streaming back to Mission Control at Johns Hopkins University Applied Physics Laboratory to the mouth watering delight of researchers and NASA.
With the first ever flyby of Pluto, America completed the initial up close reconnaissance of the planets in our solar system. Pluto was the last unexplored planet, building on missions that exactly started 50 years ago in 1965 when Mariner IV flew past Mars.
“Pluto New Horizons is a true mission of exploration showing us why basic scientific research is so important,” said John Grunsfeld, associate administrator for NASA’s Science Mission Directorate in Washington.
“The mission has had nine years to build expectations about what we would see during closest approach to Pluto and Charon. Today, we get the first sampling of the scientific treasure collected during those critical moments, and I can tell you it dramatically surpasses those high expectations.”
Crisp new view of Pluto’s largest moon, Charon shows a swath of cliffs and troughs stretches about 600 miles (1,000 kilometers) from left to right, suggesting widespread fracturing of Charon’s crust, likely a result of internal processes. At upper right, along the moon’s curving edge, is a canyon estimated to be 4 to 6 miles (7 to 9 kilometers) deep. Credit: NASA-JHUAPL-SwRI
Today the team announced that New Horizons has already made a totally unexpected discovery showing clear evidence of ice mountains on Pluto’s surface in the bright area informally known as the ‘big heart of Pluto.’
The new close-up image released today showed an icy mountain range near the base of the heart with peaks jutting as high as 11,000 feet (3,500 meters) above the surface, announced John Spencer, New Horizons science team co-investigator at the media briefing.
“It’s a very young surface, probably formed less than 100 million years old,’ said Spencer. “It may be active now.”
Spencer also announce that the heart shaped region will now be named “Tombaugh Reggio” in honor of Clyde Tombaugh, the American astronomer who discovered Pluto in 1930.
“We are seeing water ice.”
“I never would have imagined this!” Spencer exclaimed.
“And I’m very surprised that there are no craters in the first high resolution images.”
Pluto nearly fills the frame in this image from the Long Range Reconnaissance Imager (LORRI) aboard NASA’s New Horizons spacecraft, taken on July 13, 2015 when the spacecraft was 476,000 miles (768,000 kilometers) from the surface. This is the last and most detailed image sent to Earth before the spacecraft’s closest approach to Pluto on July 14. The large, heart-shaped region is front and center. Several craters are seen and much of the surface looks reworked rather than ancient. Credit: NASA-JHUAPL-SwRI
The finding of ice mountains has major scientific implications.
Unlike the icy moons of giant planets, Pluto cannot be heated by gravitational interactions with a much larger planetary body. Some other process must be generating the mountainous landscape, said the team.
“This may cause us to rethink what powers geological activity on many other icy worlds,” says Spencer of SwRI.
NASA announces discovery of icy mountain ranges on Pluto at July 15 media briefing at Johns Hopkins University Applied Physics Laboratory. Credit: Ken Kremer/kenkremer.com
“Pluto may have internal activity. There may be geysers or cryovolcanoes,” New Horizons principal investigator Alan Stern of the Southwest Research Institute, Boulder, Colorado, said during the media briefing. However there is no evidence for them yet.
Additional high resolution images for “Tombaugh Reggio” area are being transmitted back to Earth today and will continue.
“Finding a mountain range of ice is a complete surprise,” Stern noted.
After a nine year voyage through interplanetary space, New Horizons barreled past the Pluto system on Tuesday, July 14 for a history making first ever flyby at over 31,000 mph (49,600 kph), and survived the passage by swooping barely 7,750 miles (12,500 kilometers) above the planet’s amazingly diverse surface.
The team had to wait another 12 hours for confirmation that the spacecraft lived through the daring encounter when signals were reacquired as planned at 8:53 p.m. EDT last night. Since New Horizons swung past Pluto to continue its voyage, the probe is now more than million miles outbound just 24 hours later.
NASA Associate Administrator for the Science Mission Directorate John Grunsfeld, left, New Horizons Principal Investigator Alan Stern of Southwest Research Institute (SwRI), Boulder, CO, second from left, New Horizons Mission Operations Manager Alice Bowman of the Johns Hopkins University Applied Physics Laboratory (APL), second from right, and New Horizons Project Manager Glen Fountain of APL, right, are seen at the conclusion of a press conference after the team received confirmation from the spacecraft that it has completed the flyby of Pluto, Tuesday, July 14, 2015 at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. Credit: Ken Kremer/kenkremer.com
The New Frontiers spacecraft was built by a team led by Stern and included researchers from SwRI and the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. APL also operates the New Horizons spacecraft and manages the mission.
NASA Administrator Charles Bolden congratulates the New Horizons team after successful Pluto flyby on July 14, 2015, to cheering crowd at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland, during live NASA TV media briefing. Credit: Ken Kremer/kenkremer.com
Watch for Ken’s continuing onsite coverage of the Pluto flyby on July 14 from the Johns Hopkins University Applied Physics Laboratory (APL).
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
New Horizons science team co-investigator John Spencer examines print of the newest Pluto image taken on July 13, 2015 after the successful Pluto flyby. Credit: Ken Kremer/kenkremer.com
The large, heart-shaped region is front and center. Several craters are seen and much of the surface looks reworked rather than ancient. Credit: NASA
APPLIED PHYSICS LABORATORY, LAUREL, MD – With this morning’s (July 14) do or die flyby of Pluto by NASA’s New Horizons spacecraft at 7:49 a.m. EDT while traveling over 3 billion miles away, America completed the initial up close reconnaissance of the last explored planet of our solar system at its frigid, far flung reaches and revealed a remarkably differentiated world dazzling us with alien terrain far beyond anyone’s expectation.
New Horizons barreled past Pluto for a history making first ever flyby at over 31,000 mph (49,600 kph) and passed only 7,750 miles (12,500 kilometers) above the planet’s amazingly diverse surface.
To mark the occasion, NASA released the highest resolution image ever taken of Pluto as the probe swooped past its prey this morning, centered on the two lobed, differentiated ‘heart’.
But because the one ton piano shaped spacecraft has been out of touch with Mission Control for the past day as planned and busily gathering hordes of priceless data, confirmation of a successful flyby didn’t reach Mission Control on Earth until half a day later when New Horizons ‘phoned home’ with critical engineering data confirmed the health of the probe at 8:53 p.m. EDT this evening- basically saying “I’m Alive”.
“With this mission we have we have visited every planet in our solar system,” proclaimed NASA Administrator Charles Bolden this evening, July 14, to a packed house of cheering team members, invited guests and media including Universe Today at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland, during a live NASA TV media briefing shortly after accomplishing the historic feat after the nine year interplanetary voyage.
“No other nation has that capability. It’s a historic day for exploration.”
“We did it! exclaimed New Horizons principal investigator Alan Stern of the Southwest Research Institute, Boulder, Colorado, during the live media briefing.
“That’s one small step for New Horizons, one giant leap for mankind,” Stern added, paraphrasing humanity’s first moonwalker, Neil Armstrong.
“New Horizons completes the first planetary reconnaissance, a capstone of our time.”
The Pluto flyby took place on the 50th anniversary of the first interplanetary flyby by America’s Mariner 4 spacecraft when it soared past Mars in 1965.
Pluto and Charon in False Color Show Compositional Diversity. This July 13, 2015, image of Pluto and Charon is presented in false colors to make differences in surface material and features easy to see. It was obtained by the Ralph instrument on NASA’s New Horizons spacecraft, using three filters to obtain color information, which is exaggerated in the image. These are not the actual colors of Pluto and Charon, and the apparent distance between the two bodies has been reduced for this side-by-side view. Credit: NASA/APL/SwRI
“Today we inspired a whole generation of new explorers,” Bolden said to the crowd emotionally. “And you have more to do!” – as he pointedly acknowledge a crowd of young people in the room.
Pluto is covered by a spectacular array of craters, mountains, valleys, a whale shaped dark feature and a huge heart-shaped continent of pinkinsh bright ice as seen in the image taken on July 13 when the spacecraft was 476,000 miles (768,000 kilometers) from the surface.
“New Horizons has sent back the most detailed data ever of Pluto and its system of moons.”
“Every mission expands our horizons and bring us one step further on the Journey to Mars,” said Bolden regarding NASA’s agency wide plans to send astronauts to the Red Planet during the 2030s.
“You have made Pluto almost human.”
NASA Administrator Charles Bolden congratulates the New Horizons team after successful Pluto flyby on July 14, 2015, to cheering crowd at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland, during live NASA TV media briefing. Credit: Ken Kremer/kenkremer.com
Tomorrow, the more than year long data playback begins.
“The best is yet to come,” said John Grunsfeld, NASA Associate Administrator for the Science Mission Directorate, at the media briefing.
“You haven’t seen anything yet. There are many more months of data to be sent back.”
“This is like the Curiosity landing. This is just the beginning for fundamental discoveries. It’s a tremendous moment in human history.”
New Horizons Principal Investigator Alan Stern celebrates in mission control after reception of signal from NASA’s New Horizons probe at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland after the successful Pluto flyby on July 14, 2015. Credit: Ken Kremer/kenkremer.com
Congratulations rolled in from around the world including President Obama and world renowned physicist Stephen Hawking.
It has been three decades since we last visited planetary bodies at the outer reaches of our solar system when Voyager 2 flew past Uranus and Neptune in 1986 and 1989.
The New Frontiers spacecraft was built by a team led by Stern and included researchers from SwRI and the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. APL also operates the New Horizons spacecraft and manages the mission.
Watch for Ken’s continuing onsite coverage of the Pluto flyby on July 14/15 from the Johns Hopkins University Applied Physics Laboratory (APL).
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
New Horizons science team co-investigator John Spencer examines print of the newest Pluto image taken on July 13, 2015 after the successful Pluto flyby. Credit: Ken Kremer/kenkremer.com How many planets are there? A resounding 9! Says New Horizons Principal Investigator Alan Stern and Ken Kremer/Universe Today, flashing Stern’s signature ‘9 Planets’ call sign. Credit: Ken Kremer/kenkremer.com
New Horizons Flight Controllers celebrate after they received confirmation from the spacecraft that it had successfully completed the flyby of Pluto, Tuesday, July 14, 2015 in the Mission Operations Center (MOC) of the Johns Hopkins University Applied Physics Laboratory (APL), Laurel, Maryland. Credit: NASA/Bill Ingalls
Watch Pluto grow in this series of photos taken during New Horizons’ approach
Whew! We’re out of the woods. On schedule at 9 p.m. EDT, New Horizons phoned home telling the mission team and the rest of the on-edge world that all went well. The preprogrammed “phone call” — a 15-minute series of status messages beamed back to mission operations at the Johns Hopkins University Applied Physics Laboratoryin Maryland through NASA’s Deep Space Network — ended a tense 21-hour waiting period.
The team deliberately suspended communications with New Horizons until it was beyond the Pluto system, so the spacecraft could focus solely on data gathering. With a mountain of information now queued up, it’s estimated it will take 16 months to get it all back home. As the precious morsels arrive bit by byte, New Horizons will sail deeper into the Kuiper Belt looking for new targets until it ultimately departs the Solar System.
After Pluto, NASA hopes to send New Horizons to another asteroid or two in the Kuiper Belt to perform a flyby and reconnaissance similar to the Pluto mission. Credit: Alex Parker / SwRI
Assuming NASA funds a continuing mission, the team hopes to direct the spacecraft to one or two additional Kuiper Belt objects (KBO) over the next five to seven years. There are presently three possible targets – PT1, PT2, and PT3. (PT = potential target). PT1, imaged by the Hubble Space Telescope, looks like the best option at the moment and could by reached by January 2019. If you thought Pluto was small, PT 1 is only about 25 miles (40 km) across. Much lies ahead.
The image at left shows a KBO at an estimated distance of approximately 4 billion miles from Earth. Its position noticeably shifts between exposures taken approximately 10 minutes apart. The image at right shows a second KBO at roughly a similar distance. Credit: NASA, ESA, SwRI, JHU/APL, and the New Horizons KBO Search Team
The large, heart-shaped region is front and center. Several craters are seen and much of the surface looks reworked rather than ancient. Credit: NASA
We did it! At 7:49 a.m. EDT today New Horizons made history when it zoomed within 7,800 miles of Pluto, the most remote object ever visited in the Solar System. I thought you’d like to see our best view yet of Pluto in this last and sharpest image taken before closest approach. The level of detail is fantastic.
Universe Today’s Ken Kremer is on the scene at mission control, and we’ll have much more news and analysis for you later today. For now, here’s a taste.
Members of NASA’s New Horizons team react to seeing the latest image of Pluto. Credit: NASA
Pluto encounter July 14th 11:00-12:00 UTC (6:00am CDT) by Tom Ruen
Efrain Morales created this fine document of the Pluto encounter by combining the recent New Horizons photo with images taken through his telescope about 6 1/2 hours before closest approach. Images taken on July 10 and 11 show Pluto’s slow crawl across the starfield. Credit: Efrain MoralesTo give you a better idea of how small New Horizons’ targets are, this graphic shows Pluto and Charon as they would appear if placed slightly above Earth’s surface and viewed from a great distance. Recent measurements obtained by New Horizons indicate that Pluto has a diameter of 1,473 miles (2370 km, making it the largest known Kuiper Belt object, while Charon has a diameter of 751 miles (1208 km). Credit: NASA/JHUAPL/SWRI
Pluto has a very complex surface. The fact that large areas show few craters – as compared to say, Ceres or Vesta – shows that there have relatively recent changes there. Maybe very recent. Alan Stern, principal investigator for the mission, was asked by a report at this morning’s press conference if it snows on Pluto. His answer: “It sure looks like it.”
Mission principal investigator has reason to smile this morning during the press conference. So far, New Horizons is doing well. Credit: NASA-TV
Stern is also confident the spacecraft survived closest approach without getting bulleted by dust. We should know tonight when it “phones home” around 9 p.m. EDT.
Even Rosetta couldn’t resist a look at Pluto. On July 12, the spacecraft took many images of the distant world which were stacked to create the photos above. Left: The unprocessed image is obscured by dust grains in Comet 67P/C-G’s coma. Middle: Pluto’s background of stars as seen from Rosetta. Right: The processed image shows Pluto as a bright spot within the blue circle. Credits: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
With the Pluto flyby the latest achievement in over 50 years of humankind’s exploration of the Solar System’s wild assortment of moons, planets and comets, see the bounty of our efforts in this wonderful compendium titled From Pluto to the Sun by Jon Keegan, Chris Canipe and Alberto Cervantes.
A portrait from the final approach. Pluto and Charon display striking color and brightness contrast in this composite image from July 11, showing high-resolution black-and-white LORRI images colorized with Ralph data collected from the last rotation of Pluto. Color data being returned by the spacecraft now will update these images, bringing color contrast into sharper focus. Credits: NASA-JHUAPL-SWRI
Measurements by New Horizons gathered just in the past few days as the spacecraft barrels towards the Pluto planetary system now confirm that Pluto is indeed the biggest object in the vast region beyond the orbit of Neptune known as the Kuiper Belt.
Pluto is thus the undisputed King of the Kuiper Belt!
Pluto measures 1,473 miles (2,370 kilometers) in diameter, which is at the higher end of the range of previous estimates.
The big news was announced today, by New Horizons principal investigator Alan Stern of the Southwest Research Institute, Boulder, Colorado, during a live media briefing at Pluto mission control at the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland.
“This settles the debate about the largest object in the Kuiper Belt,” Stern noted.
New Horizons will swoop to within about 12,500 kilometers (nearly 7,750 miles) of Pluto’s surface and about 17,900 miles (28,800 kilometers) from Charon during closest approach at approximately 7:49 a.m. EDT (11:49 UTC) on July 14.
The new and definitive measurement of Pluto’s size is based on images taken by the high resolution Long Range Reconnaissance Imager (LORRI) to make this determination.
“The size of Pluto has been debated since its discovery in 1930. We are excited to finally lay this question to rest,” said mission scientist Bill McKinnon, Washington University, St. Louis.
Pluto was the first planet discovered by an American, Clyde Tombaugh.
Pluto’s “Heart” is seen in this new image from New Horizons’ Long Range Reconnaissance Imager (LORRI) received on July 8, 2015 after normal science operations resumed following the scary July 4 safe mode anomaly that briefing shut down all science operations. The LORRI image has been combined with lower-resolution color information from the Ralph instrument. Credits: NASA-JHUAPL-SWRI
Pluto is bigger than Eris, another big Kuiper Belt object discovered in 2005 by Mike Brown of Caltech, which is much further out from the Sun than Pluto. The discovery of Eris further fueled the controversial debate about the status of Pluto’s planethood.
Eris comes in second in size in the Kuiper Belt at only 1,445 miles (2,326 km) in diameter.
On July 11, 2015, New Horizons captured a world that is growing more fascinating by the day. For the first time on Pluto, this view reveals linear features that may be cliffs, as well as a circular feature that could be an impact crater. Rotating into view is the bright heart-shaped feature that will be seen in more detail during New Horizons’ closest approach on July 14. The annotated version includes a diagram indicating Pluto’s north pole, equator, and central meridian. Credits: NASA/JHUAPL/SWRI
Stern also noted that because Pluto is slight bigger than the average of previous estimates, its density is slightly lower than previously thought. Therefore the fraction of ice in its interior is slightly higher and the fraction of rock is slightly lower. But further data is required to pin the density down more precisely.
The uncertainty in Pluto’s size has persisted for decades and was due to the fact that Pluto has a very tenuous atmosphere composed of nitrogen.
Furthermore Pluto’s lowest atmospheric layer called the troposphere, is shallower than previously believed.
On the other hand, its largest moon Charon with which it forms a double planet, lacks a substantial atmosphere and its size was known with near certainty based on ground-based telescopic observation.
New Horizons LORRI imagery has confirmed that Charon measures 751 miles (1208 km) kilometers) across.
Stern also confirmed that frigid Pluto also has a polar cap composed of methane and nitrogen ices based on measurements from the Alice instrument.
LORRI has also zoomed in on two of Pluto’s smaller moons, Nix and Hydra.
“We knew from the time we designed our flyby that we would only be able to study the small moons in detail for just a few days before closest approach,” said Stern. “Now, deep inside Pluto’s sphere of influence, that time has come.”
The approximate sizes of Pluto’s moons Nix and Hydra compared to Denver, Colorado. While Nix and Hydra are illustrated as circles in this diagram, mission scientists anticipate that future observations by New Horizons will show that they are irregular in shape. Credits: JHUAPL/Google
But because they are so small, accurate measurement with LORRI could only be made in the final week prior to the July 14 flyby.
Nix is estimated to be about 20 miles (about 35 kilometers) across, while Hydra is roughly 30 miles (roughly 45 kilometers) across. These sizes lead mission scientists to conclude that their surfaces are quite bright, possibly due to the presence of ice.
Determinations about Pluto’s two smallest moons, Kerberos and Styx, will be made later at some point during the 16-month long playback of data after the July 14 encounter.
It has been three decades since we last visited planetary bodies at the outer reaches of our solar system when Voyager 2 flew past Uranus and Neptune in 1986 and 1989.
New Horizons’ last look at Pluto’s Charon-facing hemisphere reveals the highest resolution view of four intriguing darks spots for decades to come. This image, taken early the morning of July 11, 2015, shows newly-resolved linear features above the equatorial region that intersect, suggestive of polygonal shapes. This image was captured when the spacecraft was 2.5 million miles (4 million kilometers) from Pluto. Credit: NASA/JHUAPL/SWRI
New Horizons is closing in fast on its quarry at a whopping 31,000 mph (49,600 kph) after a nine year interplanetary voyage and is now less than half a million miles away, in the final hours before closest approach.
The New Frontiers spacecraft was built by a team led by Stern and included researchers from SwRI and the Johns Hopkins University Applied Physics Laboratory (APL) in Laurel, Maryland. APL also operates the New Horizons spacecraft and manages the mission.
Watch for Ken’s continuing onsite coverage of the Pluto flyby on July 14 from the Johns Hopkins University Applied Physics Laboratory (APL).
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Artist's impression of Charon (left) and Pluto (right), showing their relative sizes. Credit:
‘Here be Dragons…’ read the inscriptions of old maps used by early seafaring explorers. Such maps were crude, and often wildly inaccurate.
The same could be said for our very understanding of distant planetary surfaces today. But this week, we’ll be filling in one of those ‘terra incognita’ labels, as New Horizons conducts humanity’s very first reconnaissance of Pluto and its moons.
The closest approach for New Horizons is set for Tuesday, July 14th at 11:49 UT/7:49 AM EDT, as the intrepid spacecraft passes 12,600 kilometres (7,800 miles) from Pluto’s surface. At over 4 light hours or nearly 32 astronomical units (AUs) away, New Horizons is on its own, and must perform its complex pirouette through the Pluto system as it cruises by at over 14 kilometres (8 miles) a second.
This also means that we’ll be hearing relatively little from the spacecraft on flyby day, as it can’t waste precious time pointing its main dish back at the Earth. With a downlink rate of 2 kilobits a second—think ye ole 1990’s dial-up, plus frozen molasses—it’ll take months to finish off data retrieval post flyby. A great place to watch a simulation of the flyby ‘live’ is JPL’s Eyes on the Solar System, along with who is talking to New Horizons currently on the Deep Space Network with DSN Now.
A snapshot of the current July 13th view of New Horizons as it nears Pluto. (Image credit: NASA’s Eyes on the Solar System).
Bob King also wrote up an excellent timeline of New Horizons events for Universe Today yesterday. Also be sure to check out the Planetary Society’s in-depth look at what to expect by Emily Lakdawalla.
Seems strange that after more than a decade of recycling the same blurry images and artist’s conceptions in articles, we’re now getting a new and improved shot of Pluto and Charon daily!
To follow the tale of Pluto is to know the story of modern planetary astronomy. Discovered in 1930 by American astronomer Clyde Tombaugh from the Lowell Observatory, Pluto was named by 11-year old Venetia Burney. Venetia just passed away in 2009, and there’s a great short documentary interview with her entitled Naming Pluto.
The blink comparitor Clyde Tombaugh used to discover Pluto, on display at the Lowell Observatory. Image Credit: David Dickinson
Fun fact: Historians at the Carnegie Institute recently found images of Pluto on glass plates… dated 1925, from five years before its discovery.
Despite the pop culture reference, Pluto was not named after the Disney dog, but after the Roman god of the underworld. Pluto the dog was not named in Disney features until late 1930, and if anything, the character was more than likely named after the buzz surrounding the newest planet on the block.
We’re already seeing features on Pluto and Charon in the latest images, such as the ‘heart,’ ‘donut,’ and the ‘whale’ of Pluto, along with chasms, craters and a dark patch on Charon. The conspicuous lack of large craters on Pluto suggests an active world.
The International Astronomical Union (IAU) convention for naming any new moons discovered in the Plutonian system specifies characters related to the Roman god Pluto and tales of the underworld.
Brake for New Horizons on July 14th… Image credit: David Dickinson
With features, however, cartographers of Pluto should get a bit more flexibility. Earlier this year, the Our Pluto campaign invited the public to cast votes to name features on Pluto and Charon related to famous scientists, explorers and more. The themes of ‘fictional explorers and vessels’ has, of course, garnered much public interest, and Star Trek’s Mr. Spock and the Firefly vessel Serenity may yet be memorialized on Charon. Certainly, it would be a fitting tribute to the late Leonard Nimoy. We’d like to see Clyde Tombaugh and Venetia Burney paid homage to on Pluto as well.
We’ve even proposed the discovery of a new moon be named after the mythological underworld character Alecto, complete with a Greek ‘ct’ spelling to honor Clyde Tombaugh.
The discovery and naming of Charon in 1978 by astronomer Robert Christy set a similar precedent. Christy choose the name of the mythological boatman who plied the river Styx (which also later became a Plutonian moon) as it included his wife Charlene’s nickname ‘Char.’ This shibboleth also set up a minor modern controversy as to the exact pronunciation of Charon, as the mythological character is pronounced with a hard ‘k’ sound, but most folks (including NASA) say the moon as ‘Sharon’ in keeping with Christy’s in-joke that slipped past the IAU.
And speaking of Pluto’s large moon, someone did rise to the occasion and take our ‘Charon challenge,’ we posed during the ongoing Pluto opposition season recently. Check out this amazing capture of the +17th magnitude moon winking in and out of view next to Pluto courtesy of Wendy Clark:
Click here to see the animation of the possible capture of Charon near Pluto. Image credit and copyright: Wendy Clark
Clark used the 17” iTelescope astrograph located at Siding Spring Observatory in Australia to tease out the possible capture of the itinerant moon.
Great job!
What’s in a name? What strange and wonderful discoveries await New Horizons this week? We should get our very first signal back tomorrow night, as New Horizons ‘phones home’ with its message that it survived the journey around 9:10 PM EDT/1:10 UT. Expect this following Wednesday—in the words of New Horizons principal Investigator Alan Stern—to begin “raining data,” as the phase of interpreting and evaluating information begins.
The women who power the New Horizons mission to Pluto. Image credit: SwRI/JHUAPL
And there’s more in store, as the New Horizons team will make the decision to maneuver the spacecraft for a rendezvous with a Kuiper Belt Object (KBO) next month. Said KBO flyby will occur in the 2019-2020 timeframe, and perhaps, we’ll one day see a Pluto orbiter mission or lander in the decades to come…
Maybe one way journeys to ‘the other Red Planet’ are the wave of the future.’ Pluto One anyone?
