Venus Express Prepares to Descend into Hell

Artist's impression of the surface of Venus. Credit: ESA/AOES

Venus is definitely not a friendly planet for humanity. Soviet landers that arrived on the surface a few decades back were crushed pretty quickly. Its surface temperature is more than 842 degrees Fahrenheit (450 degrees Celsius) and the atmosphere is full of noxious gases.

But descending into this pressure-filled cooker is exactly what Venus Express is going to do shortly. The European Space Agency spacecraft will conclude eight years of orbital operations with an attempt to fall into the planet. The maneuvers are complicated, and there’s no guarantee they will go as planned, but ESA plans to make the plunge by the end of this year.

For the better part of a decade, Venus Express has been orbiting the planet every 24 hours, swinging in an elliptical orbit that ranges from 155 miles (250 kilometers ) to 41,010 miles (66,000 kilometers). But now the spacecraft is almost out of fuel, and will now be redirected for “experimental aerobreaking” to slow down through skimming the atmosphere.

The maneuvers will take place between June 18 and July 17, where controllers hope to gain some information about the planet’s magnetic field, solar wind, temperature and pressure.

“The campaign also provides the opportunity to develop and practice the critical operations techniques required for aerobraking, an experience that will be precious for the preparation of future planetary missions that may require it operationally,” stated Paolo Ferri, head of mission operations.

No one is sure if the spacecraft will run out of fuel, or even if it survives, but if it does its orbit could be raised to do a few more scientific observations of the planet before going into the atmosphere forever.

Venus’ Express scientific treasure trove includes measuring hydrogen atom escape in the atmosphere, checking out the planet’s clouds and tracking the slowing rotation of the planet (which is happening for reasons that are not quite clear.) It also discovered an ozone layer on the planet.

Source: European Space Agency

Mercury’s Ready For Its Close-Up, Mr. MESSENGER

One of the highest-resolution images of Mercury's surface ever acquired.

Are you ready for a good close look at Mercury? At an incredible 5 meters per pixel, this is one of the highest-resolution images of Mercury’s surface ever captured. It was acquired on March 15 with the MESSENGER spacecraft’s MDIS (Mercury Dual Imaging System) instrument and shows an 8.3-km (5.2-mile) -wide section of Mercury’s north polar region, speckled with small craters and softly rolling hills.

Because MESSENGER was moving so quickly relative to the targeted area it was imaging, a short exposure time was necessary to avoid blurring. As a result the image appears a bit grainy. See the original map projection here.

Wondering what the next-best image was of Mercury? Find out below:

The previous record for most extreme close-up of Mercury was held by this image:

7 meter/pixel targeted observation of Mercury by the MESSENGER spacecraft
7 meter/pixel targeted observation of Mercury by the MESSENGER spacecraft

It was acquired as a targeted observation by MESSENGER’s Narrow-Angle Camera on April 30, 2012, and has a resolution of 7 meters/pixel. It shows an impact melt-covered area about 11 km (7 miles) across near Gaugin crater.

(Although Mercury’s surface may at first appear strikingly similar to the Moon’s, it’s been known since the Mariner 10 mission that the two worlds are very different at fundamental geologic and compositional levels. Read more on that here.)

Images like these are extremely special; during the first two years of MESSENGER’s mission in orbit around Mercury, over 150,000 images were acquired but only five images had resolutions better than 10 meters per pixel.

Artist's impression of MESSENGER orbiting Mercury
Artist’s impression of MESSENGER orbiting Mercury

On April 20, 2014, MESSENGER completed its 3,000th orbit of Mercury (3,075 to date) and is steadily moving into an even lower-altitude orbit. MESSENGER now comes within less than 200 km (124 miles) of the planet’s surface when it passes over its north pole every eight hours… that’s less than half the altitude of the Space Station!

Orbiting at such a low altitude and so often will allow MESSENGER to examine Mercury’s surface in unprecedented detail. Now that 100% of the planet has been successfully mapped by MESSENGER it can spend its second — and last — extended mission investigating specific scientific targets.

Watch: A Tribute to MESSENGER 

“The final year of MESSENGER’s orbital operations will be an entirely new mission,” said Sean Solomon, Principal Investigator for MESSENGER. “With each orbit, our images, our surface compositional measurements, and our observations of the planet’s magnetic and gravity fields will be higher in resolution than ever before. We will be able to characterize Mercury’s near-surface particle environment for the first time. Mercury has stubbornly held on to many of its secrets, but many will at last be revealed.”

Read more in a recent news release from the MESSENGER team here.

Want to explore a high-res map of Mercury and see where MESSENGER is right now? Click here.

Image credits: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

Astrophotos: Occultation of Saturn

Saturn heading behind the Moon on May 14, 2014. Credit and copyright: Silveryway on Flickr.

Observers in Australia and New Zealand had a special treat this week: watching Saturn disappear behind the Moon during an event called an occultation. (You can read all the details of how and why this happens here in our preview article.) Catching an event like this with a camera is tricky… the bright Moon can wash out the comparatively tiny (from our vantage point) planet Saturn. But here, several astrophotographers had success. Above is a nice view from Silveryway on Flickr.

See an animation of the event below from astroblogger Ian Musgrave:

An animated gif of the occulation of Saturn by the Moon on May 14, 2014. Credit and copyright: Ian Musgrave.

Ian Musgrave from Australia used a 4″ Newtonian telescope, with a “Point and Shoot” Canon IXUS attached with inifinty to infinity focussing, 3xZoom, and a 25mm eye piece. You can see his entire set of images on his website here.

Widefield view of the occultation of Saturn on May 14, 2014. Credit and copyright: Ian Musgrave.
Widefield view of the occultation of Saturn on May 14, 2014. Credit and copyright: Ian Musgrave.

Peter Lake, also from Australia not only took images of the event, but also did a live Hangout on G+.

“Live hangouts and driving a telescope live is a tricky business,” Peter wrote on his website. “I lost focus playing around trying to improve the image due to the thin cloud.” He added that the night sky wasn’t ideal that evening. “The full moon was shining through thin clouds, washing out a bit of the detail.”

Saturn getting ready to head behind the Moon. Credit and copyright: Peter Lake.
Saturn getting ready to head behind the Moon. Credit and copyright: Peter Lake.

You can watch a replay of Peter’s Hangout below:

Saturn and the Moon diffusion. The clouds drifted across the sky, Saturn and the Moon shone bright, the view from the UK. Credit and copyright: Sarah and Simon Fisher.
Saturn and the Moon diffusion. The clouds drifted across the sky, Saturn and the Moon shone bright, the view from the UK. Credit and copyright: Sarah and Simon Fisher.

Sarah and Simon Fisher from the UK captured this “diffused” view of Saturn close the Moon on the evening of May 13, 2014.

Want to get your astrophoto featured on Universe Today? Join our Flickr group or send us your images by email (this means you’re giving us permission to post them). Please explain what’s in the picture, when you took it, the equipment you used, etc.

Hubble Sees Jupiter’s Red Spot Shrink to Smallest Size Ever

In this comparison image the photo at the top was taken by Hubble's Wide Field Planetary Camera 2 in 1995 and shows the spot at a diameter of just under 21 000km; the second down shows a 2009 WFC3 photo of the spot at a diameter of just under 18 000km; and the lowest shows the newest image from WFC3 taken in 2014 with the spot at its smallest yet, with diameter of just 16 000km. Credit: NASA/ESA

Earlier this year we reported that amateur astronomers had observed and photographed the recent shrinking of Jupiter’s iconic Great Red Spot. Now, astronomers using the Hubble Space Telescope concur:

“Recent Hubble Space Telescope observations confirm that the spot is now just under  10,250 miles (16,500 km) across, the smallest diameter we’ve ever measured,” said Amy Simon of NASA’s Goddard Space Flight Center in Maryland, USA. 

Drawing of Jupiter made on Nov. 1, 1880 by French artist and astronomer Etienne Trouvelot showing transiting moon shadows and a much larger Great Red Spot.
Drawing of Jupiter made on Nov. 1, 1880 by French artist and astronomer Etienne Trouvelot showing transiting moon shadows and a much larger Great Red Spot.

Using historic sketches and photos from the late 1800s, astronomers determined the spot’s diameter then at 25,475 miles (41,000 km) across. Even the smallest telescope would have shown it as a huge red hot dog. Amateur observations starting in 2012 revealed a noticeable increase in the spot’s shrinkage rate.

The spot’s “waistline” is getting smaller by just under 620 miles (1,000 km) per year while its north-south extent has changed little. In a word, the spot has downsized and become more circular in shape. Many who’ve attempted to see Jupiter’s signature feature have been frustrated in recent years not only because the spot’s pale color makes it hard to see  against adjacent cloud features, but because it’s physically getting smaller.

Jupiter's Great Red Spot or GRS is located in a 'bay' or hollow south of the South Equatorial Belt. It's a swirling storm that rises above the cloud tops of the planet and rotates in a counterclockwise direction with a period of about This photo was taken by Hubble on April 21, 2014.
Jupiter’s Great Red Spot or GRS is located in a ‘bay’ or hollow south of the swirly South Equatorial Belt. A titanic storm that’s raged like hurricane-like for at least 400 years, the top of the Spot’s cloud deck rises 5 miles (8 km) above the planet’s clouds and rotates in an anticlockwise direction about once every 4 days. This photo was taken by Hubble on April 21, 2014. Credit: NASA / ESA / A. Simon

As to what causing the drastic downsizing, there are no firm answers yet:

“In our new observations it is apparent that very small eddies are feeding into the storm,” said Simon. “We hypothesized that these may be responsible for the accelerated change by altering the internal dynamics of the Great Red Spot.”


A brief primer on Jupiter’s Great Red Spot

The Great Red Spot has been a trademark of the planet for at least 400 years – a giant hurricane-like storm whirling in the planet’s upper cloud tops with a period of 6 days. But as it’s shrunk, its period has likewise grown shorter and now clocks in at about 4 days.

The storm appears to be conserving angular momentum by spinning faster the same way an ice skater spins up when she pulls in her arms. Wind speeds are increasing too, making one wonder whether they’ll ultimately shrink the spot further or bring about its rejuvenation.

Definitely worth keeping an eye on.

 

It’s Alive! Rosetta’s Comet Flares As It Approaches The Sun

A close-up of comet 67P/Churyumov–Gerasimenko taken from 1.24 million miles (2 million km) away. The image was obtained by the Rosetta spacecraft in April 2014 as it approached the comet for a close-up view. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

Wow! This image shows the target comet for the Rosetta mission starting to develop a tail. This bodes well for the European Space Agency spacecraft, which is on its way to study Comet 67P/Churyumov–Gerasimenko later this year to learn more about the origins of the solar system.

“It’s beginning to look like a real comet,” stated Holger Sierks, principal investigator for OSIRIS (Optical, Spectroscopic and Infrared Remote Imaging System.)

“It’s hard to believe that only a few months from now, Rosetta will be deep inside this cloud of dust and en route to the origin of the comet’s activity,” added Sierks, who is with the Max Planck Institute for Solar System Research in Germany.

The picture was one of a series taken over six weeks, between March 27 and May 4, as the spacecraft zoomed to within 1.24 million miles (two million kilometers) of the target. You can see the full animation by clicking on the image below.

Comet 67P/Churyumov–Gerasimenko develops a coma in this sequence of pictures taken by Rosetta, a European Space Agency spacecraft. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA
Comet 67P/Churyumov–Gerasimenko develops a coma in this sequence of pictures taken by Rosetta (click the picture to see the animation), a European Space Agency spacecraft. Credit: ESA/Rosetta/MPS for OSIRIS Team MPS/UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA

The comet is now about four times as far from the Sun as the Earth is. Even from afar, the Sun’s heat is warming the comet’s ice, causing dust and vapor to carry out into space — forming the coma. The coma will develop into a long tail when the comet gets even closer to the sun.

Rosetta will be the comet’s companion as it draws closer to the sun; its closest approach will be in August 2015, when it is between the orbits of Earth and Mars. So far, the spacecraft’s 11 instruments appear to be in excellent health, ESA stated, although the agency is remaining cautious as the rendezvous date approaches. The spacecraft will begin orbital insertion activities later this month, and send out its Philae lander in November.

“We have a challenging three months ahead of us as we navigate closer to the comet, but after a 10-year journey it’s great to be able to say that our spacecraft is ready to conduct unique science at comet 67P/C-G,” stated Fred Jansen, ESA’s Rosetta mission manager.

Source: European Space Agency

Earth’s Lightning Ramps Up With The Solar Wind: Study

Time-lapse photo of several lightning strikes at night. Credit: NOAA Photo Library, NOAA Central Library; OAR/ERL/National Severe Storms Laboratory (NSSL)

As the northern hemisphere enters the hazy days of summer, thunderstorms will freckle many of our nights and days. What causes these sudden bursts of light that flash through the sky? Previous research showed that one cause is cosmic rays from space, generated by supernovas. But a new paper shows that something much closer and powerful is also responsible: solar wind from our own Sun.

First, a quick primer on what the solar wind is. It’s a continuous stream of particles from the Sun, and it tends to pick up when the Sun emits solar flares. These flares are more frequent when sunspots are in greater numbers on the star’s surface, which happens when the Sun’s magnetic activity increases. The Sun’s activity falls and rises on an 11-year cycle, and 2014 happens to be close to the peak of one of those cycles.

“Our main result,” said lead author Chris Scott (of the University of Reading) in a statement, “is that we have found evidence that high-speed solar wind streams can increase lightning rates. This may be an actual increase in lightning or an increase in the magnitude of lightning, lifting it above the detection threshold of measurement instruments.”

The researchers discovered “a substantial and significant increase in lightning rates” for up to 40 days after solar winds hit Earth’s atmosphere. The reasons behind this are still poorly understood, but the researchers say this could be because the air’s electrical charge changes as the particles (which are themselves electrically charged) hit the atmosphere.

If this is proven, this could give a new nuance to weather forecasters who could incorporate information about solar wind streams that are being watched by spacecraft. This stream of particles would change with the sun’s 27-day rotation, and researchers hope this could improve long-range forecasts.

The study is based on UK Met Office lightning strike data in the United Kingdom between 2000 and 2005, more specifically anything that happened within 500 kilometers (310 miles) of central England. They also used data from NASA’s Advanced Composition Explorer (ACE), a spacecraft that examines the solar wind.

After each event, the researchers uncovered an average of 422 lightning strikes in the United Kingdom in the next 40 days, compared to an average of 321 lightning strikes in between these events. (The peak was about 12 to 18 days after an event.)

Artist's impression of the solar wind from the sun (left) interacting with Earth's magnetosphere (right). Credit: NASA
Artist’s impression of the solar wind from the sun (left) interacting with Earth’s magnetosphere (right). Credit: NASA

The researchers pointed out that the magnetic field of Earth does deflect many of these particles, but in the cases observed the particles would have been energetic enough to move into “cloud-forming regions” of the Earth’s atmosphere.

“We propose that these particles, while not having sufficient energies to reach the ground and be detected there, nevertheless electrify the atmosphere as they collide with it, altering the electrical properties of the air and thus influencing the rate or intensity at which lightning occurs,” Scott stated.

You can read more about the paper in Environmental Research Letters.

Source: IOP Publishing

NASA’s Magnetospheric Multiscale Mission to Provide 1st 3-D View of Earth’s Magnetic Reconnection Process – Cleanroom visit with Bolden

NASA Administrator Charles Bolden poses with the agency’s Magnetospheric Multiscale (MMS) spacecraft, mission personnel, Goddard Center Director Chris Scolese and NASA Associate Administrator John Grunsfeld, during visit to the cleanroom at NASA's Goddard Space Flight Center in Greenbelt, Md., on May 12, 2014. Credit: Ken Kremer- kenkremer.com

NASA Administrator Charles Bolden poses with the agency’s Magnetospheric Multiscale (MMS) spacecraft, mission personnel, Goddard Center Director Chris Scolese and NASA Associate Administrator John Grunsfeld, during visit to the cleanroom at NASA’s Goddard Space Flight Center in Greenbelt, Md., on May 12, 2014. Credit: Ken Kremer- kenkremer.com
Story updated[/caption]

NASA GODDARD SPACE FLIGHT CENTER, MD – NASA’s upcoming Magnetospheric Multiscale (MMS) mission is comprised of a quartet of identically instrumented observatories aimed at providing the first three-dimensional views of a fundamental process in nature known as magnetic reconnection. They were unveiled to greet NASA Administrator Charles Bolden on Monday, May 12, in a rare fully stacked arrangement inside the Goddard cleanroom.

Universe Today was on hand with NASA Administrator Bolden, Science Mission Chief John Grunsfeld and the MMS mission team at Goddard for a first hand inspection and up close look at the 20 foot tall, four spacecraft stacked configuration in the cleanroom and for briefings about the projects fundamental science goals.

“I’m visiting with the MMS team today to find out the status of this mission scheduled to fly early in 2015. It’s one of many projects here at Goddard,” NASA Administrator Bolden told me in an exclusive one-on-one interview at the MMS cleanroom.

“MMS will help us study the phenomena known as magnetic reconnection and help us understand how energy from the sun – magnetic and otherwise – affects our own life here on Earth. MMS will study what effects that process … and how the magnetosphere protects Earth.”

Magnetic reconnection is the process whereby magnetic fields around Earth connect and disconnect while explosively releasing vast amounts of energy.

Technicians work on NASA’s 20-foot-tall Magnetospheric Multiscale (MMS) mated quartet of stacked observatories in the cleanroom at NASA's Goddard Space Flight Center in Greenbelt, Md., on May 12, 2014.  Credit: Ken Kremer- kenkremer.com
Technicians work on NASA’s 20-foot-tall Magnetospheric Multiscale (MMS) mated quartet of stacked observatories in the cleanroom at NASA’s Goddard Space Flight Center in Greenbelt, Md., on May 12, 2014. Credit: Ken Kremer- kenkremer.com

MMS measurements should lead to significant improvements in models for yielding better predictions of space weather and thereby the resulting impacts for life here on Earth as well as for humans aboard the ISS and robotic satellite explorers in orbit and the heavens beyond.

The four identical spacecraft – which are still undergoing testing – were stacked in a rarely seen launch arrangement known affectionately as the “IHOP configuration” – because they look rather like a stack of luscious pancakes.

“MMS is a fundamental heliophysics science mission,” Craig Tooley told me at the MMS cleanroom. Tooley is MMS project manager at NASA Goddard.

“Unlike Hubble that uses remote sensing, MMS is like a flying laboratory ‘in situ’ that will capture events that are the major energy transfer from the sun’s magnetic field into our Earth’s space weather environment and magnetosphere.”

“These are called magnetic reconnection events that pump enormous amounts of energy into the plasma and the fields around Earth. It’s one of the main drivers of space weather and a fundamental physical process that is not very well understood,” Tooley explained.

“The spacecraft were built in-house here at Goddard and just completed vibration testing.”

MMS will launch atop an Atlas V rocket in March 2015 from Space launch Complex 41, Cape Canaveral Air Force Station, Florida.

Artist rendition of the four MMS spacecraft in orbit in Earth’s magnetic field. Credit: NASA
Artist rendition of the four MMS spacecraft in orbit in Earth’s magnetic field. Credit: NASA

The vibration testing is a major milestone and is conducted to ensure the spacecraft can withstand the most extreme vibration and dynamic loads they will experience and which occurs during liftoff inside the fairing of the Atlas V booster.

MMS is also another highly valuable NASA science mission (along with MAVEN, LADEE and others) which suffered launch delays and increased costs as a result of the US government shutdown last October 2013, Bolden confirmed to Universe Today.

“We ended up slipping beyond the original October 2014 date due to the government shutdown and [the team] being out of work for a couple of weeks. MMS is now scheduled to launch in March 2015,” Bolden told me.

“So then you are at the mercy of the launch provider.”

“The downside to slipping that far is that’s its [MMS] costing more to launch,” Bolden stated.

Each of the Earth orbiting spacecraft is outfitted with 25 science sensors to study the microphysics of three fundamental plasma processes: magnetic reconnection, energetic particle acceleration, and turbulence.

Magnetic reconnection occurs throughout our universe.

“The primary mission will last two years,” Tooley told me.

“Each spacecraft carries about 400 kilograms of fuel. There is a possibility to extend the mission by about a year based on fuel consumption.”

NASA Administrator Charles Bolden and Ken Kremer (Universe Today) inspect NASA’s Magnetospheric Multiscale (MMS) mated quartet of stacked spacecraft at the cleanroom at NASA's Goddard Space Flight Center in Greenbelt, Md., on May 12, 2014.  Credit: Ken Kremer- kenkremer.com
NASA Administrator Charles Bolden and Ken Kremer (Universe Today) inspect NASA’s Magnetospheric Multiscale (MMS) mated quartet of stacked spacecraft at the cleanroom at NASA’s Goddard Space Flight Center in Greenbelt, Md., on May 12, 2014. Credit: Ken Kremer- kenkremer.com

The spacecraft will use the Earth itself as a laboratory to unlock the mysteries of magnetic reconnection – the primary process that transfers energy from the solar wind into Earth’s magnetosphere and is responsible for geomagnetic storms.

“To understand the fundamental physics, they will fly in a pyramid-like formation and capture the magnetic reconnection events in 3-D by flying through them as they happen – that’s why we have 4 spacecraft,” Tooley explained.

“Initially they will be spaced apart by about 10 to 30 kilometers while they fly in a tetrahedron formation and scan with their booms spread out – depending on what the scientists says is the optimal configuration.”

“They fly in a highly elliptical orbit between about 7,000 and 75,000 kilometers altitude during the first half of the mission. Eventually the orbit will be extended out to about 150,000 kilometers.”

The best place to study magnetic reconnection is ‘in situ’ in Earth’s magnetosphere.

This will lead to better predictions of space weather phenomena.

NASA’s Magnetospheric Multiscale (MMS) science mission
NASA’s Magnetospheric Multiscale (MMS) science mission

Magnetic reconnection is also believed to help trigger the spectacular aurora known as the Northern or Southern lights.

Stay tuned here for Ken’s continuing MMS, Curiosity, Opportunity, SpaceX, Orbital Sciences, Boeing, Orion, LADEE, MAVEN, MOM, Mars and more planetary and human spaceflight news.

Ken Kremer

………

Ken’s upcoming presentation: Mercy College, NY, May 19: “Curiosity and the Search for Life on Mars” and “NASA’s Future Crewed Spaceships.”

MMS Project Manager Craig Tooley (right) and Ken Kremer (Universe Today) discuss  science objectives of NASA’s upcoming Magnetospheric Multiscale mission by 20 foot tall mated quartet of stacked spacecraft at the cleanroom at NASA's Goddard Space Flight Center in Greenbelt, Md., on May 12, 2014.  Credit: Ken Kremer- kenkremer.com
MMS Project Manager Craig Tooley (right) and Ken Kremer (Universe Today) discuss science objectives of NASA’s upcoming Magnetospheric Multiscale mission by 20 foot tall mated quartet of stacked spacecraft at the cleanroom at NASA’s Goddard Space Flight Center in Greenbelt, Md., on May 12, 2014. Credit: Ken Kremer- kenkremer.com

Phobos & Deimos — The Moons of Mars Explained

Where did Mars’ moons Phobos and Deimos come from? How did they end up in orbit around Mars? This cool video from the folks at Kurzgesagt answers the most-oft asked questions about these mini moons.

You should also check out their other wonderful videos, like the one about our own Moon, below, which explains how big our Moon really is. The answer might surprise you.

Continue reading “Phobos & Deimos — The Moons of Mars Explained”

Direct Image of an Exoplanet 155 Light Years Away

Credit

Chalk up another benchmark in the fascinating and growing menagerie of extra-solar planets.

This week, an international team of researchers from the Université de Montréal announced the discovery of an exoplanet around the star GU Piscium in the constellation of Pisces the Fishes 155 light years distant. Known as GU Psc b, this world is estimated to be 11 times the mass of Jupiter — placing it just under the lower mass limit for brown dwarf status — and orbits its host star 2,000x farther than the distance from Earth to the Sun once every 80,000 (!) years. In our own solar system, that would put GU Psc b out over twice the distance of the aphelion of 90377 Sedna.

The primary star, GU Psc A, is an M3 red dwarf weighing in at 35% the mass of our Sun and is just 100 million years old, give or take 30 million years. In fact, researchers targeted GU Psc after it was determined to be a member of the AB Doradus moving group of relatively young stars, which are prime candidates for exoplanet detection. Another recent notable discovery, the free-floating “rogue planet” CFBDSIR 2149-0403 is also thought to be a member of the AB Doradus moving group.

The fact that GU Psc B was captured by direct imaging at 155 light years distant is amazing. The international team that made the discovery was led by PhD student at the Department of Physics Université de Montréal  Marie-Ève Naud. The team was able to discern this curious planet by utilizing observations from the W.M. Keck observatory, the joint Canada-France-Hawaii Telescope, the Gemini Observatory and the Observatoire Mont-Mégantic in Québec.

Credit
An artist’s conception of the forlorn world of GU Psc b. Credit– Lucas Granito.

Universe Today recently caught up with researcher Marie-Ève Naud and her co-advisor Étienne Artigau about this exciting discovery.

What makes this discovery distinctive? Is this the most distant exoplanet ever imaged?

“Well, first, there are not a lot of exoplanets that were detected ‘directly’ so far. Most were found indirectly through the effect they have on their parent star. The few planets for which we have an actual image are interesting because we can analyze their light directly, and thus learn much more about them. It was also one of the “coolest” planets that have been directly imaged, showing methane absorption. And yes, it is certainly the most distant exoplanet to a main-sequence star that has been found so far.

This distance makes GU Psc b very interesting from a theoretical point of view, because it’s hard to imagine how it could have formed in the protoplanetary disk of its star. The current working definition of an exoplanet is based solely on mass (<13 Jupiter masses), so GU Psc b probably formed in a way that is more similar to how stars formed. It is definitely the kind of object that makes us think about what exactly is an exoplanet.”   

At a distance of 2000 A.U.s from its primary, how are astronomers certain that PU Psc b is related to its host and not a foreground or background object?

“As the host star, GU Psc is relatively nearby; it displays a significant apparent proper motion (note: around 100 milliarcseconds a year) relative to distant background stars and galaxies.

On images taken one year apart with WIRCam on the Canada-France-Hawaii Telescope, we observed that the companion displays the same big proper motion, i.e. they move together in the plane of the sky, while the rest of the stars in the field don’t. We also determined the distance of the both the planet and the host star, and they both agree. Also, they both display signs that they are very young.”

Were any groundbreaking techniques used for the discovery, and what does this mean for the future of exoplanet science?

“Quite the opposite… most planet hunting techniques using direct imaging involve state-of-the-art adaptive optics systems, but we used ‘standard’ imaging without any exotic techniques. Planet searches usually attempt to find planets in orbits similar to those of our own solar system giants, and finding these objects, indeed, requires groundbreaking techniques. In a sense, there is an anthropocentric bias in the searches for exoplanets, as people tend to look for systems that are similar to our own solar system. Very distant planets like GU Psc b have been under the radar, even though they are easier to find than their closer-in counterparts. To find this planet, we used very sensitive ‘standard’ imaging, but we chose carefully the wavelengths where planets display colors that are unlike most other astrophysical objects such as stars and galaxies.”    

The general field of PU Piscium A & B in the night sky... note that this currently puts it in the dawn sky, near Venus and Uranus! Credit: Starry Night.
The general field of GU Piscium A & B in the night sky… note that this currently puts it in the dawn sky, near Venus and Uranus! Credit: Starry Night.

GU Piscium shines at magnitude +13.6 northeast of the March equinoctial point in the constellation of Pisces. Although its exoplanet companion is too faint to be seen with a backyard telescope, its angular separation is a generous 42,” about the apparent span of Saturn, complete with rings. And it’s shaping up to be a red dwarf sort of week at Universe Today, with our recent list of red dwarf stars for backyard telescopes. And the current tally for extra-solar planets sits at 1,791… hey; didn’t we just pass 1,000 last year?

Congrats to Marie-Ève Naud and her team on this exciting new discovery… and here’s to many more to come!

Read the original paper, Discovery of a Wide Planetary-Mass Companion to the Young M3 Star GU Psc.

Moscow Delivers Double Whammy to US Space Efforts – Bans Rocket Engines for Military Use, Won’t Prolong ISS Work

United Launch Alliance Atlas V rocket – powered by Russian made RD-180 engines – and Super Secret NROL-67 intelligence gathering payload poised for launch at Space Launch Complex 41 at Cape Canaveral Air Force Station, FL, in March 2014. Credit: Ken Kremer – kenkremer.com

United Launch Alliance Atlas V rocket – powered by Russian made RD-180 engines – and Super Secret NROL-67 intelligence gathering payload poised for launch at Space Launch Complex 41 at Cape Canaveral Air Force Station, FL, in March 2014.
Credit: Ken Kremer – kenkremer.com
Story updated[/caption]

Moscow delivered a double whammy of bad news to a broad range of US space efforts today by banning the use of Russian made rocket engines for US military national security launches and by declining to prolong cooperation on the International Space Station (ISS) – says Russia’s deputy prime minister, Dmitry Rogozin, who is in charge of space and defense industries.

Rogozin was quoted in a story prominently featured today, May 13, on the English language website of Russia Today, a Russian TV news and cultural network.

“Moscow is banning Washington from using Russian-made rocket engines, which the US has used to deliver its military satellites into orbit,” said Rogozin according to the Russia Today report.

Virtually every aspect of the manned and unmanned US space program – including NASA, other government agencies, private aerospace company’s and crucial US national security payloads – are highly dependent on Russian & Ukrainian rocketry and are clearly at risk amidst the current Ukrainian crisis as tensions continue to escalate with deadly new clashes reported today in Ukraine – with global repercussions.

The engines at issue are the Russian made RD-180 engines – which power the first stage of the venerable Atlas V rocket built by United Launch Alliance (ULA) and are used to launch a wide array of US government satellites including top secret US military spy satellites for the US National Reconnaissance Office, like NROL-67, as well as science satellites for NASA like the Curiosity Mars rover and MAVEN Mars orbiter.

The dual nozzle RD-180 engines are manufactured in Russia by NPO Energomash. Rogozin’s statement effectively blocks their export to the US.

Russian Deputy Prime Minister Dmitry Rogozin. Credit: RIA Novosti
Russian Deputy Prime Minister Dmitry Rogozin. Credit: RIA Novosti

“We proceed from the fact that without guarantees that our engines are used for non-military spacecraft launches only, we won’t be able to supply them to the US,” Rogozin said.

So although the launch of NASA science missions might preliminarily appear to be exempt, they could still be at serious risk based on a qualifier from Rogozin, pertaining to RD-180 engines already delivered.

“If such guarantees aren’t provided the Russian side will also be unable to perform routine maintenance for the engines, which have been previously delivered to the US, he added.

A ULA spokesperson told me that the company has a two year supply of RD-180 engines already stockpiled in the US.

Rogozin’s statements today are clearly in retaliation to stiffened economic sanctions imposed by the US and Western nations in response to Russia’s actions in the ongoing crisis in Ukraine and the annexation of Crimea; as I reported earlier here, here and here.

Therefore, US National Security spy satellite and NASA science launches are left lingering with uncertainty and potential disarray.

Rogozin is specifically named on the US economic sanctions target list.

He was also named by SpaceX CEO Elon Musk in his firms attempt to block the importation of the RD-180 engines by ULA for the Atlas V as a violation of US sanctions.

Federal Judge Susan Braden initially imposed a temporary injunction blocking the RD-180 imports on April 30. She rescinded that order last Thursday, May 8, after receiving written communications clarifications from the US Justice and Commerce departments that the engine import did not violate the US government imposed sanctions.

Rogozin went on to say that “Moscow also isn’t planning to agree to the US offer of prolonging operation of the International Space Station (ISS) [to 2024].

“We currently project that we’ll require the ISS until 2020,” he said. “We need to understand how much profit we’re making by using the station, calculate all the expenses and depending on the results decide what to do next.”

“A completely new concept for further space exploration is currently being developed by the relevant Russian agencies”.

NASA announced early this year the agency’s intention to extend ISS operations to at least 2024, and is seeking agreement from all the ISS partners including Russia.

Since the shutdown of the Space Shuttle program in 2011 before a replacement crew vehicle was available, American astronauts are now 100% dependent on the Russian Soyuz capsule for rides to the ISS and back.

Congress has also repeatedly slashed NASA’s commercial crew program budget, forcing at least an 18 month delay in its start up and thus continued reliance on the Soyuz for years to come at over $70 million per seat.

NASA thus has NO immediate alternatives to Russia’s Soyuz – period.

The Atlas V is also planned as the launcher for two of the three companies vying for the next round of commercial crew contracts aimed at launching US astronauts to the ISS. The commercial crew contracts will be awarded by NASA later this year.

In a previous statement regarding the US sanctions against Russia, Rogozin said that sanctions could “boomerang” against the US space program and that perhaps NASA should “deliver their astronauts to the International Space Station using a trampoline.”

Curiosity rover launches to Mars atop Atlas V rocket on Nov. 26, 2011 from Cape Canaveral, Florida.  Credit: Ken Kremer
NASA’s Curiosity rover launches to Mars atop Atlas V rocket on Nov. 26, 2011 from Cape Canaveral, Florida. Atlas V 1st stage is powered by Russian made RD-180 engines.
Credit: Ken Kremer – kenkremer.com

Watch for Ken’s articles as the Ukraine crisis escalates with uncertain and potentially dire consequences for US National Security and NASA.

Stay tuned here for Ken’s continuing Boeing, SpaceX, Orbital Sciences, commercial space, Orion, Chang’e-3, LADEE, Mars rover, MAVEN, MOM and more planetary and human spaceflight news.

Ken Kremer

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Ken’s upcoming presentation: Mercy College, NY, May 19: “Curiosity and the Search for Life on Mars” and “NASA’s Future Crewed Spaceships.”

The International Space Station (ISS) in low Earth orbit.  Credit: NASA
The International Space Station (ISS) in low Earth orbit.
The sole way for every American and station partner astronaut to fly to space and the ISS is aboard the Russian Soyuz manned capsule since the retirement of NASA’s Space Shuttles in 2011. There are currently NO alternatives to Russia’s Soyuz. Credit: NASA