First image of a solar transit of Tiangong-1, the first module of the Chinese space station, taken from Southern France on May 11th 2012. Credit: Thierry Legault. Used by permission.
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Astrophotographer extraordinaire Thierry Legault has made a name for himself with his images of spacecraft transiting across the face of the Sun. He has done it again by capturing the first-ever image of the Tiangong-1 space station transiting the Sun. The monster sunspot, AR 1476 absolutely dwarfs the Chinese space station (inside the circle), but you can see incredible details of the Tiangong-1 below in a zoomed-in version. Legault had less than a second to capture the event, with the Tiangong traveling at 7.4km/s (26500 km/h or 16500 mph,) the transit duration was only 0.9 seconds! The size of the station is pretty small — as without solar panels the first module of the Tiangong measures just 10.3 x 3.3 meters.
Zoomed and cropped version of the first image of a solar transit of Tiangong-1, the first module of the Chinese space station, taken from Southern France on May 11th 2012. Credit: Thierry Legault. Used by permission. Inset: CNSA.
Legault’s equipment was a Takahashi FSQ-106 refractor, a Baader Herschel prism and Canon 5D Mark II camera. Exposure of 1/8000s at 100 ISO.
As Legault told us in an interview earlier this year, in order to capture such images he studies maps, uses CalSky software, and has a radio synchronized watch to know very accurately when the transit event will happen.
“My camera has a continuous shuttering for 4 seconds, so I begin the sequence 2 seconds before the calculated time,” he said. “I don’t look through the camera – I never see the space station when it appears, I am just looking at my watch!”
For a transit event, he gets a total of 16 images – 4 images every second, and only after he enlarges the images will he know if he succeeded or not.
“There is a kind of feeling that is short and intense — an adrenaline rush!” Legault said. “I suppose it is much like participating in a sport, but the feeling is addictive.”
Thanks to Thierry for sharing his latest success, and you can see larger versions of these images, and much more at his website.
Last Power-Up of the Flight Deck of Space Shuttle Endeavour in May 2012 The flight deck of Space Shuttle Endeavour was powered up for the final time in early May 2012 to complete decommissioning activities for museum display. Endeavour was powered down on May 11, 2012 and all power to the flight deck was terminated for the last time in history. Credit: Ken Kremer
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At 9:58 a.m. this morning (Friday May 11), technicians unplugged Space Shuttle Endeavour marking the final power down of NASA’s last powered orbiter and termination of all power flowing to the flight deck. Today, Endeavour was euthanized. The flight deck went dark for the last time as Endeavour is being prepped inside Orbiter Processing Facility-2 (OPF-2) for final departure from the Kennedy Space Center later this year and display at her final resting place in Los Angeles.
As Endeavour was powered back up this past week for one final time to carry out decommissioning and safing activities, a tiny media group was invited to crawl inside and photographically record the flight deck as a living spaceship for the last time in history. Ken Kremer and Mike Deep were honored to receive a NASA invitation and to represent Universe Today and we share our photos of Endeavour’s last flight deck power-up here.
Flight Deck of Space Shuttle Endeavour Powered up for the final time. Credit: Mike Deep
For me, standing on the astronauts flight deck was like being transported to the bridge of the “Starship Enterprise” – but this was real, not science fiction. I was at last standing on the “Starship Endeavour” and this was the closest I ever felt to being in space. The only thing better is being in orbit.
The blue display screens used by the Shuttle Commander and Pilot were real, lit and vividly moving before my eyes, dials were active and shining and multitudes of critical gauges lined the cabin all over from front to back, left to right , top to bottom.
Flight Deck of Space Shuttle Endeavour Powered up for the final time. Shuttle Commander seat at left, Shuttle Pilot seat at right. Credit: Ken Kremer/www.kenkremer.com
Endeavour was the youngest in NASA’s fleet of three surviving orbiters and designated as vehicle OV-105. She flew 25 missions over a spaceflight career that spanned 19 years from the inaugural flight in 1992 to the final flight in 2011 to deliver the dark matter hunting Alpha Magnetic Spectrometer (AMS) to the International Space Station (ISS). Altogether, Endeavour spent 299 days in space, orbited the Earth 4671 times and traveled over 197 million kilometers (123 million mi).
Endeavour’s power termination on May 11, 2012 comes almost exactly one year since her final launch on the 16 day long STS-134 mission on May 16, 2011. Since then technicians have been removing hazardous materials and propellants from the orbiters hydraulic and fuel lines and thoroughly cleansing Endeavour to make it safe for museum display to the general public. The power must be on to drain and purge the toxic materials.
Flight Deck of Space Shuttle Endeavour. Pilot seat. Credit: Mike Deep
This week I watched as technicians removed components of Endeavours fuel lines from the aft compartments that might possibly be reused at some future date inside NASA’s new Heavy Lift rocket, dubbed the SLS or Space Launch System.
Power to NASA’s two other orbiters, Discovery and Atlantis, was terminated in December on the 16th and 22rd respectively. Read my earlier story at Universe Today, here.
Following the forced retirement of the Space Shuttle Program for lack of money after the STS-135 mission in July 2011, all three orbiters were cleansed and purged of toxic contaminants in preparation for their final assignment as museum pieces.
The orbiters had a lot of usable life left in them, having flown barely a third of the 100 mission design lifetime.
Discovery was the first orbiter to leave the Kennedy Space Center. On April 17, Discovery was flown atop a modified Boeing 747 jumbo Jet to the Smithsonian’s Udvar-Hazy Center outside Washington, DC. Discovery was towed inside the museum on April 19 and placed on permanent public display.
Flight Deck of Space Shuttle Endeavour. Shuttle Commander seat. Credit: Ken Kremer
Since the conclusion of the Space Shuttle Program, the US has had absolutely zero capability to send astronauts or cargo to the International Space Station. For at least another 4 or 5 years, the US will be completely reliant on the Russians to ferry American astronauts to the ISS until around 2016 or 2017 when NASA’s hopes that one or more of the privately developed commercial “space taxis” will be ready to launch.
Devastating and continuous cuts to NASA’s budget by visionless politicians in Washington, DC have forced repeated delays to the initial launch of the commercial crew spacecraft- such as the SpaceX Dragon.
Flight Deck of Space Shuttle Endeavour. Shuttle Commander seat. Credit: Mike DeepFlight Deck of Space Shuttle Endeavour. Credit: Mike DeepFlight Deck of Space Shuttle Endeavour. Credit: Mike DeepFlight Deck of Space Shuttle Endeavour. Pilot seat. Credit: Mike DeepSide view of Flight Deck of Space Shuttle Endeavour behind Pilot seat. Credit: Ken KremerDr. Ken Kremer aboard the USS Starship Endeavour in dry dock at the Kennedy Space Center and at the conclusion of her 19 year mission to boldly go where no NASA Space Shuttle has gone before !
To be one of the last humans on Earth present as an eyewitness to the historic last power up of the last living shuttle – Endeavour – while standing immersed inside the astronauts flight deck and experience what are truly the final days of NASA’s 30 year long Space Shuttle Program was simultaneously humbling, thrilling beyond words and incredibly sad – for all the missions that might yet have been and the Exploration and Discovery that’s yet to be accomplished on the High Frontier.
Color-composite image of Titan and Saturn. There are few confirmed craters on Titan, and the ones that have been spotted are much shallower than expected. Image Credit: NASA/JPL/SSI/J. Major
Here’s a great shot of Titan and Saturn acquired by Cassini on May 6, 2012 just after a pass by the haze-covered moon. It’s a color-composite made from images taken in Cassini’s red, green and blue color channels, and the resulting image was color adjusted a bit to appear more “Saturny”.
UPDATE 7/2/12: The image above is featured in today’s Astronomy Picture of the Day (APOD)… check it out here.
Cassini also made some closer passes of Titan on May 6, taking images within about 710,000 km. After recent passes of Encealdus and Dione, Cassini buzzed past Titan in preparation of a targeted flyby on May 22, after which it will head up and out out of the “moonplane” in order to get a better view of Saturn’s rings and upper latitudes.
After that, Cassini won’t be playing amongst the moons again for three years, so images like this will be a rarity for a while.
Another image of Titan, closer-in and set against Saturn’s rings and clouds, shows the fine, transparent structure of the moon’s upper atmospheric haze layers:
Created by the breakdown of methane in Titan’s opaque atmosphere by UV radiation, the haze is composed of complex hydrocarbons that extend outwards up to ten times the thickness of Earth’s atmosphere!
(The RGB layers weren’t available for this particular view, so there’s no color version of it.)
Check out previous images from Cassini’s flyby of Dione and Enceladus, and follow along with the Cassini mission on the JPL site here.
Top image: Color-composite image of Titan and Saturn (NASA/JPL/SSI/J. Major) Bottom image: Titan in blue wavelength against Saturn (NASA/JPL/SSI)
Diagram of a proposed current generation of a Starship Enterprise. Credit: BuildTheEnterprise.org
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In Star Trek lore, the first Constitution Class Starship Enterprise will be built by the year 2245. But today, an engineer has proposed — and outlined in meticulous detail – building a full-sized, ion-powered version of the Enterprise complete with 1G of gravity on board, and says it could be done with current technology, within 20 years. “We have the technological reach to build the first generation of the spaceship known as the USS Enterprise – so let’s do it,” writes the curator of the Build The Enterprise website, who goes by the name of BTE Dan.
This “Gen1” Enterprise could get to Mars in ninety days, to the Moon in three, and “could hop from planet to planet dropping off robotic probes of all sorts en masse – rovers, special-built planes, and satellites.”
Size comparisons of buildings to the proposed USS Enterprise. Credit: BuildTheEnterprise.org
Complete with conceptual designs, ship specs, a funding schedule, and almost every other imaginable detail, the BTE website was launched just this week and covers almost every aspect of how the project could be done. This Enterprise would be built entirely in space, have a rotating gravity section inside of the saucer, and be similar in size with the same look as the USS Enterprise that we know from Star Trek.
“It ends up that this ship configuration is quite functional,” writes BTE Dan, even though his design moves a few parts around for better performance with today’s technology. This version of the Enterprise would be three things in one: a spaceship, a space station, and a spaceport. A thousand people can be on board at once – either as crew members or as adventurous visitors.
While the ship will not travel at warp speed, with an ion propulsion engine powered by a 1.5GW nuclear reactor, it can travel at a constant acceleration so that the ship can easily get to key points of interest in our solar system. Three additional nuclear reactors would create all of the electricity needed for operation of the ship.
The saucer section would be a .3 mile (536 meter) diameter rotating, magnetically-suspended gravity wheel that would create 1G of gravity.
The first assignments for the Enterprise would have the ship serving as a space station and space port, but then go on to missions to the Moon, Mars, Venus, various asteroids and even Europa, where the ships’ laser would be used not for combat but for cutting through the moon’s icy crust to enable a probe to descend to the ocean below.
Of course, like all space ships today, the big “if” for such an ambitious effort would be getting Congress to provide NASA the funding to do a huge 20-year project. But BTE Dan has that all worked out, and between tax increases and spreading out budget cuts to areas like defense, health and human services, housing and urban development, education and energy, the cuts to areas of discretionary spending are not large, and the tax increases could be small. “These changes to spending and taxes will not sink the republic,” says the website. “In fact, these will barely be noticed. It’s amazing that a program as fantastic as the building a fleet of USS Enterprise spaceships can be done with so little impact.”
“The only obstacles to us doing it are the limitations we place on our collective imagination,” BTE Dan adds, and his proposal says that NASA will still receive funding for the science, astronomy and robotic missions it currently undertakes.
A detailed schedule of building the Enterprise. Credit: BuildTheEnterprise.org
But he proposes not just one Enterprise-class ship, but multiple ships, one of which can be built every 33 years – once per generation – giving three new ships per century. “Each will be more advanced than the prior one. Older ships can be continually upgraded over several generations until they are eventually decommissioned.”
BTE Dan, who did not respond to emails, lists himself as a systems engineer and electrical engineer who has worked at a Fortune 500 company for the past 30 years.
The website includes a blog, a forum and a Q&A section, where BTE Dan answers the question, “What if someone can prove that building the Gen1 Enterprise is beyond our technological reach?”
Answer: “If someone can convince me that it is not technically possible (ignoring political and funding issues), then I will state on the BuildTheEnterprise site that I have been found to be wrong. In that case, building the first Enterprise will have to wait for, say, another half century. But I don’t think that anyone will be able to convince me it can’t be done. My position is that we can – and should – immediately start working on it.”
Image of the Thor's Helmet nebula (NGC 2359) Credit: R. Barrena (IAC) and D. López
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Going to see the new Avengers movie this weekend, either for the first or fortieth time? You may not see much of Thor’s helmet in the film (as he opts for more of a “Point Break” look) but astronomers using the Isaac Newton Group of telescopes on the Canary Islands have succeeded in spotting it… in this super image of the Thor’s Helmet nebula!
Named for its similarity to the famous horned Viking headgear (seen horizontally), the Thor’s Helmet nebula is a Wolf-Rayet structure created by stellar winds from the star seen near the center blowing the gas of the bluish “helmet” outwards into space via pre-supernova emissions.
The colors of the image above, acquired with the ING’s Isaac Newton Telescope, correspond to light emitted in hydrogen alpha, doubly-ionised oxygen and single-ionised sulfur wavelengths.
Super-sized for the thunder god himself, Thor’s Helmet measures at about 30 light-years across. It’s located in the constellation Canis Major, approximately 15,000 light-years from Earth. (You’d think Thor would have left his favorite accessory in a more convenient location… I suspect Loki may be behind this.)
Astronomers, assemble!
Read more about this and see other images from the ING telescopes here.
The Isaac Newton Group of Telescopes (ING) is owned by the Science and Technology Facilities Council (STFC) of the United Kingdom, and it is operated jointly with the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) of the Netherlands and the Instituto de Astrofísica de Canarias (IAC) of Spain. The telescopes are located in the Spanish Observatorio del Roque de los Muchachos on La Palma, Canary Islands, which is operated by the Instituto de Astrofísica de Canarias (IAC).
Full-disk image of Earth from Russia's Elektro-L satellite. (NTs OMZ)
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Unlike most satellite images of Earth, this one was not assembled from multiple swath scans or digitally projected onto a globe model — it’s the full disk of our planet in captured as a single, enormous 121 megapixel image, acquired by Russia’s Elektro-L weather-forecasting satellite.
Like NASA’s GOES satellites, Elektro-L is parked in a geostationary orbit approximately 36,000 km (22,300 miles) above our planet. Unlike NASA’s satellites, however, Elektro-L captures images in near-infrared as well as visible wavelengths, providing detail about not only cloud movement but also vegetation variations. Its wide-angle Multichannel Scanning Unit (MSU) takes images every 15-30 minutes, showing the same viewpoint of Earth across progressive times of the day.
At a resolution of 0.62 miles per pixel, full-size Elektro-L images are some of the most detailed images of Earth acquired by a weather satellite.
Download the full-size image here (100+ megabytes).
Launched aboard a Zenit rocket on January 20, 2011, Elektro-L was the first major spacecraft to be developed in post-Soviet Russia. Parked over Earth at 76 degrees east longitude, Elektro-L provides local and global weather forecasting and analysis of ocean conditions, as well as “space weather” monitoring — measurements of solar radiation and how it interacts with Earth’s magnetic field. Its initial lifespan is projected to be ten years.
A second Elektro-L satellite is anticipated to launch in 2013.
Image credit: Russian Federal Space Agency / Research Center for Earth Operative Monitoring (NTS OMZ). See more images and video from Elektro-L on James Drake’s Planet Earth here. (Tip of the geostationary hat to Jesus Diaz at Gizmodo.)
Sagittarius Teapot Asterism Author Eoghanacht via wikimedia commons
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Humans have been grouping stars into patterns since the beginning of time, each culture placing its own myths and folklore in the sky, but it wasn’t until 1930 that the International Astronomical Union (IAU) divided the sky into 88 constellations each with its own strict boundary. Though many of these are well known, and the stories they depict are well documented, few look like the figures they are supposed to represent. Asterisms are more user friendly guides and the starting point for most astronomers. These bright, simple, more prosaic shapes, stand out among the constellations and often serve as useful landmarks, pointing the way to celestial delights!
The best known and most instantly recognisable asterism is probably the Plough or Big Dipper in Ursa Major. Two of its stars, Merak and Dubhe, (The Pointers) pointing the way to the North Star Polaris in Ursa Minor. NASA’s Juno spacecraft stopped on its 5 year journey to Jupiter on March 21 to capture this image of our best known asterism:
The Big Dipper by Juno Credit: NASA/JPL-Caltech/SWRI/MSSS
In the Northern hemisphere, each season is heralded by its own asterism: The Autumn sky is dominated by the great Square of Pegasus, formed by stars from both Pegasus and Andromeda and its top left corner points the way to the Andromeda Galaxy, just a hop, skip and jump away. Most people recognise the three stars Alnitak, Alnilam and Mintaka, making up the Belt of Orion, which shines bright in the Winter sky indicating one of the richest regions in the sky, the Orion Molecular Cloud Complex. The Diamond of Virgo marking the Spring, consists of Arcturus (Boötes), Spica (Virgo), Denebola (Leo) and Cor Caroli (Canes Venatici). These encompass the constellation Coma Berenices and many of the galaxies within the Virgo Cluster. The Summer Triangle of Deneb (Cygnus), Altair (Aquila), and Vega (Lyra) currently sails over us guiding the way to the Ring Nebula in its top right corner.
Searching for Leo? Look for the Sickle, a backwards question mark that represents the lion’s head. Hunting for Hercules? The Keystone is the key and you will also find the Hercules Cluster (M13) on its right hand side. Boötes is easier to spot if you look for the Kite or Ice Cream Cone, than try to make out an ox driver! Not many people can see poor Queen Cassiopia, punished for her vanity to circle the heavens, but the W that marks the constellation is instantly recognisable. The Circlet is a lovely signpost to one of the fish of Pisces. You’d be hard pressed to recognise Sagittarius as the centaur it depicts, but there is the Teapot (Bertrand Russell was right, there is a celestial teapot!) showing the way to this rich patch of sky.
The Southern hemisphere has no shortage of asterisms either, most notably Argo Navis which represents the entire ship Argo sailed by Jason and the Argonauts and would be the largest constellation in the sky if it hadn’t been broken up in 1752 by French astronomer Nicolas Louis de Lacaille into the constellations we know today as Carina (the keel), Puppis (the poop deck) and Vela (the sails). Also in the Southern hemisphere are found The Three Patriachs in Triangulum Australe and the Fish Hook in Scorpius among others.
There are many more obscure asterisms too. Job’s Coffin graces the constellation of Delphinus, Asses and the Manger are in Cancer, Poniatowski’s bull (named for the King of Poland) is part of Ophiuchus and Aquila. There are the Lozenge, Saxophone, Coathanger, and many more.
The sky can seem a bewildering place, filled with gods, kings and mythical creatures. Asterisms like the Teapot make a more welcoming and friendly introduction, allowing a novice stargazer to easily pick their way around the sky and gain confidence and as many stars get swallowed by increasing light pollution, asterisms still shine out to show the way.
I’ve been waiting for nearly two months to be able to share these videos from the Dawn mission’s “flyover” views of Vesta. Scientists showed some of these incredible views at the Lunar and Planetary Science Conference in March, but couldn’t make them public until they published their work in the journal Science.
“Vesta is unlike any other object we’ve visited in the solar system,” said Dawn mission team member Vishnu Reddy at a briefing today. “We see a wide range of variation on the surface, with some areas bright as snow, and other areas as dark as coal.”
The video above is a stunningly beautiful flyover of most of Vesta. Another video, below, takes viewers on a virtual tour of Vesta’s south polar basin, the ‘snowman’ set of craters and a crater called Oppia.
Scientists said today that Vesta more closely resembles a small planet or Earth’s Moon than another asteroid, and they now have a better understanding of both Vesta’s surface and interior, and can conclusively link Vesta with meteorites that have fallen on Earth.
So much for the world ending on December 21, 2012. We’ve been saying it for years, but a new find by archaeologists confirms the Mayan calendar indeed does not end this year but keeps going, just like turning a page to a new calendar.
“It’s very clear that the 2012 date, while important as Baktun 13, was turning the page,” David Stuart, quoted by Alan Boyle on MSNBC’s Cosmic Log. “Baktun 14 was going to be coming, and Baktun 15 and Baktun 16. … The Maya calendar is going to keep going, and keep going for billions, trillions, octillions of years into the future.”
A team of archaeologists found a small room in Mayan ruins where royal scribes wrote on the walls — apparently like a blackboard — to keep track of astronomical records and details of the complex Mayan calendar. The writings date to about 1,200 years ago.
These are the oldest known astronomical tables from the Maya. They were found at the Xultun archaeological site in Guatemala’s Peten region. Scientists already knew the Mayans must have been keeping such records during that time period, but until now the oldest known examples dated from about 600 years later.
The room, about 2 meters (6-feet) square, contains walls decorated with images of a king and some other notable figures, as well as astronomical numbers and writings, the scientists said. The room had a stone roof rather than a thatched one, which may indicate the importance of the room.
Why did they write on walls, as opposed to other Mayan texts that have been found on bark paper?
The time period of the early 9th century was not a stable time for the Mayans, as there was political turmoil between the various city-states of the time, and the researchers said that perhaps the Xultun scribes wished to make a more permanent record of their data related to the calendar.
By some supposed “researchers,” Dec. 21, 2012 has been correlated to the end of the Mayan Long Count calendar, which was based on a cycle of 13 intervals known as baktuns, each lasting 144,000 days.
But the newly found writing on walls of the ancient room shows wide ranges of accumulated time, including a 17-baktun period. “There was a lot more to the Maya calendar than just 13 baktuns,” said Stuart, talking with reporters. Seventeen baktuns would stand for about 6,700 years, which is much longer than the 13-baktun cycle of 5,125 years. However, Stuart cautioned that the time notation shouldn’t be read as specifying a date that’s farther in the future than Dec. 21.
“It may just be that this is a mathematical number that’s kind of interesting,” he said. “We’re not sure what the base of the calendar is.”
William Saturno, an archaeologist at Boston University who led the team of archaeologists said many different scientists have been trying to get the word out that the end of the Maya culture’s 13-baktun Long Count calendar doesn’t signify the end of the world, but merely a turnover to the next cycle in a potentially infinite series — like going from Dec. 31 to Jan. 1 on a modern calendar.
“If someone is a hard-core believer that the world is going to end in 2012, no painting is going to convince them otherwise,” he said. “The only thing that can convince them otherwise is waiting until Dec. 22, 2012 — which fortunately for all of us isn’t that far away.”
For a quarter century, researchers believed a bow "shock" formed ahead of the heliosphere as it moved through interstellar space – similar to the sonic boom made by a jet breaking the sound barrier. New data from NASA's Interstellar Boundary Explorer (IBEX) shows that the heliosphere moves through space too slowly to form a bow shock. Credit: Southwest Research Institute.
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For years, scientists have thought a bow “shock” formed ahead of our solar system’s heliosphere as it moved through interstellar space – similar to the sonic boom made by a jet breaking the sound barrier. But new data from NASA’s Interstellar Boundary Explorer (IBEX) shows that our system and its heliosphere move through space too slowly to form a bow shock, and therefore does not exist. Instead there is a more gentle ‘wave.’
“While bow shocks certainly exist ahead of many other stars, we’re finding that our Sun’s interaction doesn’t reach the critical threshold to form a shock,” said Dr. David McComas, principal investigator of the IBEX mission, “so a wave is a more accurate depiction of what’s happening ahead of our heliosphere — much like the wave made by the bow of a boat as it glides through the water.”
From IBEX data, McComas and his team were able to make refinements in relative speed of our system, as well as finding more information about the local interstellar magnetic field strength. IBEX data have shown that the heliosphere actually moves through the local interstellar cloud at about 52,000 miles per hour, roughly 7,000 miles per hour slower than previously thought. That is slow enough to create more of a bow “wave” than a shock.
Bow shocks exist around other astrospheres, as seen in these images taken by multiple telescopes. New IBEX data show that our heliosphere moves through interstellar space too slowly to produce a bow shock, creating more of a “wake” as it travels through space. Image courtesy of Southwest Research Institute
Another influence is the magnetic pressure in the interstellar medium. IBEX data, as well as earlier Voyager observations, show that the magnetic field is stronger in the interstellar medium requiring even faster speeds to produce a bow shock. Combined, both factors now point to the conclusion that a bow shock is highly unlikely.
The IBEX team combined its data with analytical calculations and modeling and simulations to determine the conditions necessary for creating a bow shock. Two independent global models — one from a group in Huntsville, Ala., and another from Moscow — correlated with the analytical findings.
Their paper was published today in the journal Science.
How does this new finding change our understanding of our heliosphere?
“It’s too early to say exactly what this new data means for our heliosphere,” McComas said. “Decades of research have explored scenarios that included a bow shock. That research now has to be redone using the latest data. Already, we know there are likely implications for how galactic cosmic rays propagate around and enter the solar system, which is relevant for human space travel.”
