Tag: spaceflight

Rogozin removed as Roscosmos’ head

8:52 am

Dmitry Rogozin, the head of Russia’s Roscosmos space corporation which controls the country’s entire aerospace industry, was fired yesterday and replaced by another former deputy prime minister, Yuri Borisov.

Don’t think Rogozin is out of favor with Putin however. Instead, it appears Putin wants his bull-headedness for running one of the regions Russia has conquered in the eastern Ukraine.

Following its tumultuous tenure as the head of Roskosmos, Rogozin was expected to move to the presidential administration and, possibly, lead it or “curate” the Russian occupation of the Eastern Ukraine, the independent Meduza publication reported.

I wonder if Rogozin’s removal is connected in any way with the ongoing negotiations between NASA and Russia’s foreign ministry for the barter agreement to allow the two to fly each other’s astronauts on each other’s capsules.

That agreement has been in negotiations and reviews for months by the two agencies as well as the U.S. State Department and Russian Foreign Ministry. NASA has long advocated for the agreement to enable what it calls “mixed crews” or “integrated crews” on spacecraft. That would ensure at least one NASA astronaut and one Roscosmos cosmonaut would be on the station should either Soyuz or commercial crew vehicles be unavailable for an extended period.

Rogozin’s bellicose manner has I think made those negotiations difficult. Putin might have decided, especially with the break up of its space partnership with Europe, to tone things down. Moreover, he might have realized that Rogozin’s contentious manner might be better put trying to take control of occupied Ukrainian territory.

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Falcon 9 launches cargo Dragon to ISS

5:56 pm

Capitalism in space: SpaceX tonight successfully used its Falcon 9 rocket to launch a Dragon freighter to ISS, with docking expected on July 16 at 11:20 am (Eastern).

The first stage landed successfully on a drone ship in the Atlantic, completing its fifth flight. The cargo Dragon is flying its third flight to the station.

The leaders in the 2022 launch race:

30 SpaceX
22 China
9 Russia
5 Rocket Lab
4 ULA

The U.S. now leads China 43 to 22 in the national rankings, and the entire globe combined 43 to 38.

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Webb infrared image of Jupiter & Europa

3:36 pm

Jupiter and Europa as seen by Webb
Click for full image.

During the commissioning phase after deployment, the James Webb Space Telescope took images of Jupiter and several asteroids in order test the telescope’s instruments. The photo to the right, cropped and reduced to post here, shows both Jupiter and its moon Europa to the left.

Fans of Jupiter will recognize some familiar features of our solar system’s enormous planet in these images seen through Webb’s infrared gaze. A view from the NIRCam instrument’s short-wavelength filter shows distinct bands that encircle the planet as well as the Great Red Spot, a storm big enough to swallow the Earth. The iconic spot appears white in this image because of the way Webb’s infrared image was processed.

…Clearly visible at left is Europa, a moon with a probable ocean below its thick icy crust, and the target of NASA’s forthcoming Europa Clipper mission. What’s more, Europa’s shadow can be seen to the left of the Great Red Spot. Other visible moons in these images include Thebe and Metis.

The false color differences indicated differences in heat but it is not explained whether brighter is colder or warmer in this photo.. As one of my readers below correctly notes, Europa’s shadow tells us that darker is cooler. This one image shows that the Red Spot and Jupiter’s equatorial regions and poles are generally warm.

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Comet K2: big and doing unexpected things

9:19 am

Link here. The article provides a nice overview of the observations so far of this very distant but very large comet making its suspected first close approach to the Sun this week, though still beyond the orbit of Mars and barely visible to amateurs.

K2 was first sighted in May 2017 at a much farther distance from the Sun than most comet discoveries. It had developed a coma much earlier than expected, which scientists now think came from from carbon monoxide.

“Carbon monoxide has been detected in other comets closer to the sun, although in much lower quantities than water. Carbon monoxide is very volatile and hard to freeze into a solid.” Jewitt and his colleagues theorized that as the comet slightly warmed while moving toward the planetary region of the solar system, the carbon monoxide ice near its surface turned into a gas that streamed into the vacuum of interplanetary space like constant wind. This wind stirred up dust particles from the comet’s surface, creating the round puffball-like coma.

But it took several failed attempts to measure the chemical composition of the comet to confirm the theory, Jewitt said. The team finally succeeded last year when the comet reached the orbit of Jupiter, and the scientists finally spotted carbon monoxide in the heart of the comet.

Comet K2 also did not develop a comet tail as expected. This appears to be because the particles in its coma are much larger than expected, something that at present is a complete puzzle.

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No more Ingenuity flights until August

9:08 am

Because it is now winter on Mars, with lots of seasonal dust in the atmosphere, the engineering team operating the helicopter Ingenuity have decided to suspend further flights until August.

Dust levels are expected to subside later in July, so the team has decided to give the helicopter’s batteries a break for a few weeks and build their daily state of charge back up. Weather permitting, Ingenuity is expected to be back in the air around the start of August.

This decision is not a surprise. When the team announced in May the plans for the helicopter’s most recent flight, completed in June, they suggested flights would pause for awhile thereafter. They have now made it official.

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Icy scarps in the high southern latitudes of Mars

1:25 pm

Icy scallops in the high southern latitudes of Mars
Click for full image.

Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on May 30, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists label “Patching Mantling Unit,” located at about 57 degrees south latitude in a region where scientists have found good evidence of near surface ice. The top layer, or mantle, is likely patchy because it has a high content of water ice and is sublimating away. That almost all the cliffs are south-facing, which in the southern hemisphere gets the least direct sunlight, supports this supposition. For example, in the crater at the bottom of the image the ice would have disappeared first from the north-facing interior rim slopes, with the sublimation slowly working its way northward. Thus we have that butte extending out from the north rim.

The global map below not only indicates the location of these scallops with the green dot, it illustrates the overall icy nature of most of the Mars.
» Read more

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Ariane-6 mock-up installed at launchpad for tests

9:28 am

The European Space Agency yesterday announced that it has installed an Ariane-6 full scale mock-up at its launchpad in French Guiana in preparation for tank and launch procedure tests.

The Ariane 6 combined tests model is highly representative of the flight model. It consists of the core stage and the upper stage, which make up the central core, as well as three pylons shaped like the rocket’s solid boosters and a fully representative but inert mockup of the fourth booster.

The Ariane 6 combined tests model central core was precisely mated in the purpose-built launcher assembly building, where this task is carried out horizontally. Automated guidance vehicles then brought the assembled core to the launch and, working with the crane at the mobile gantry, raised it to its vertical position.

The date of the actual first launch has not been announced, though ESA has officially admitted that it will not occur this year as hoped.

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Roscosmos forbids its astronauts from using Europe’s robot arm

9:19 am

In response to the final decision this week by the European Space Agency to officially end its cooperation with Russia on its ExoMars mission, Roscosmos today forbid its astronauts from using Europe’s new robot arm that was recently installed on the Russian Nauka module of ISS.

Russia’s crew onboard the International Space Station (ISS) will stop using the European ERA manipulator arm in response to the European Space Agency’s (ESA) refusal from cooperation on the ExoMars project, CEO of Russia’s state space corporation Roscosmos Dmitry Rogozin said on Tuesday.

“In my turn, I instruct our ISS crew to stop using the European Robotic Arm (ERA). Let [ESA Director General Josef] Aschbacher along with his boss [EU foreign policy chief Josep] Borrell fly to space and do at least something useful in their entire lives,” he wrote on his Telegram channel.

The arm was designed to work on the Russian part of ISS, so it appears this decision by Rogozin is an example of someone cutting off his nose to spite his face. It essentially reduces Russia’s capabilities on the station.

As for ExoMars, it is unclear what will happen to the lander that Russia built to put Europe’s Franklin rover on Mars. Roscosmos has said it might proceed with its own mission to Mars, using that lander, but it has not made the full commitment to do so.

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ABL completes static fire test of first stage of its new RS1 rocket

9:06 am

Capitalism in space: The new smallsat rocket startup ABL has successfully completed a full static fire test of the first stage of its new RS1 rocket from its launchpad in Kodiak, Alaska.

Company executives said that they performed the static-fire test of the first stage of its RS1 rocket July 9 at the Pacific Spaceport Complex – Alaska on Kodiak Island, the site where the company plans to conduct its first launch.

“The operation verified our startup sequence and stage level engine performance,” Harry O’Hanley, chief executive of ABL, said in a statement to SpaceNews. “A testament to our team’s intense preparation, we completed the test on the first attempt.”

The static-fire test also verified the performance of the ground systems, including a portable launch stool that can be packed into a shipping container. That system, O’Hanley said, enables launching from a flat pad like at Kodiak.

The company is presently completing testing of the rocket’s upper stage, with its next task to mate the two and complete a full dress rehearsal countdown. Though no launch date has been set, the company has been targeting a launch before the end of this year.

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OneWeb agrees with SpaceX: Dish’s ground-based plans a frequency threat

9:01 am

Capitalism in space: In a filing with the FCC, OneWeb has come out in full agreement with its competitor SpaceX, stating that Dish’s proposal to use the 12 GHz wavelength would threaten its satellite communications.

In a letter to the Federal Communications Commission, OneWeb urged the regulator to reject a request from satellite broadcaster Dish Network and spectrum holder RS Access to run two-way mobile services in the band. If approved, “it would leave significant areas of the United States unusable by the otherwise ubiquitous NGSO [fixed satellite service] user terminals,” wrote Kimberly Baum, OneWeb’s vice president of spectrum engineering and strategy.

To connect user terminals, the SpaceX-owned Starlink and OneWeb megaconstellations use a satellite downlink band that extends from 10.7 GHz to 12.7 GHz. The analysis from OneWeb is the latest in a string of studies assessing how a high-power mobile network in the 12.2-12.7 GHz band would impact NGSO services.

Though the FCC has not yet made a final decision, it has already rejected Dish network’s request to block SpaceX’s use with Starlink of these wavelengths.

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Rocket Lab & ESA complete launches

8:40 am

Very early today from New Zealand Rocket Lab successfully launched the first of two quickly scheduled launches for the National Reconnaissance Office, designed to demonstrate its ability to achieve fast scheduling and rapid turnaround. The second launch is targeting July 22, 2022, only ten days later.

Also today the European Space Agency (ESA) successfully completed the first launch of its new upgraded Vega-C rocket, putting its prime payload (a passive test satellite) plus six cubesats into orbit. Though ESA says it will eventually hand over operations to Arianespace, its commercial arm, the rocket itself is mostly built by the Italian company Avio. Also, the rocket’s solid rocket first stage will be used as an optional side booster on the Ariane-6 rocket ArianeGroup is building for ESA.

Though ESA launched Vega-C, as it will eventually be managed by Arianespace I include it in that company’s total, which is now three launches for 2022.

The leaders in the 2022 launch race:

29 SpaceX
22 China
9 Russia
5 Rocket Lab
4 ULA

American private enterprise. now leads China 42 to 22 in the national rankings, and the entire globe 42 to 38.

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China launches another communications satellite for its space program

1:01 pm

Using its Long March 3B rocket, China today launched the third satellite in the second generation of communication satellites used by its space program.

All told China now has seven satellites in this constellation, giving it a great deal of redundancy.

The leaders in the 2022 launch race:

29 SpaceX
22 China
9 Russia
4 Rocket Lab
4 ULA

American private enterprise still leads China 41 to 22 in the national rankings, and the entire world 41 to 37.

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The highest point on Mars

12:41 pm

The highest point on Mars
Click for full image.

Today’s cool image is cool not because of anything visible within it, but because of its location. The picture to the right, cropped to post here, was taken on May 27, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). While the terrain shown is a relatively featureless plain of craters and gullies not unlike the surface of the Moon, what we are really looking at is the peak of Mars’ tallest mountain, Olympus Mons.

That’s right, this spot on Mars sits about 70,000 feet above Mars’ mean “sea level”, the elevation scientists have chosen as the average elevation on Mars from its center. At 70,000 feet, this peak is more than twice as high as Mount Everest on Earth.

Yet you wouldn’t really know you are at this height if you stood there. The scale of this mountain is so large that this peak, which actually forms the southern rim of the volcano’s 50 to 60 mile wide caldera, is actually relatively flat. If you stood here, you would not see the vast distant terrain far below. Instead, you’d see an ordinary horizon line in the near distance only slightly lower than where you stand.
» Read more

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India inaugurates its own space debris tracking facility

9:21 am

ISRO, India’s government space agency, today inaugurated its own space debris tracking facility, designed to track space junk much as the Space Force does in the U.S.

A new facility dubbed the System for Safe & Sustainable Operation has been inaugurated in Bengaluru that will deal with emerging threats from space debris.

The new facility will help India achieve its Space Situational Awareness (SSA) goals by providing comprehensive and timely information about the space environment. The system will alert the agency about probabilities of in-orbit collisions, fragmentation, atmospheric re-entry risk, space-based strategic information, hazardous asteroids and space weather forecasts.

Though China might have its own comparable facility, I am unsure. Even if it does, the U.S. military has been for decades the only nation that does this tracking and then provides the data to the world, at no cost. That India is now developing its own capability signals that nation’s desire to chart its own path in space that does not depend on the resources of others.

This facility also signals the shift in ISRO’s job. Before, this government agency built and owned India’s rockets, flying commercial missions for profit. Now, the Modi government wants to transfer those tasks to India’s private sector, with ISRO merely acting as a customer if it needs such services. This change however will reduce ISRO’s influence, something that factions within India’s government are resisting. By giving ISRO the new task of tracking space debris, the Modi government gives ISRO new responsibilities to replace the ones it is losing. This will ease the turf war and speed the transition to a competing commercial industry.

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More Webb images released

9:08 am

Southern Ring Nebula, as taken by Webb
Click for full image.

As planned, NASA this morning released four new science images from the James Webb Space Telescope, in addition to the deep field image released yesterday.

All are spectacular, with each producing new information not previously observed. To see the Stephen’s Quintet image go here. For the exoplanet data, showing the presence of water in its atmosphere, go here. For the Carina nebula image, go here.

The image to the right, reduced to post here, shows the Southern Ring Nebula as taken by two Webb cameras in different infrared wavelengths. From the press release:

Two stars, which are locked in a tight orbit, shape the local landscape. Webb’s infrared images feature new details in this complex system. The stars – and their layers of light – are prominent in the image from Webb’s Near-Infrared Camera (NIRCam) [at the top], while the image from Webb’s Mid-Infrared Instrument (MIRI) on the [bottom] shows for the first time that the second star is surrounded by dust. The brighter star is in an earlier stage of its stellar evolution and will probably eject its own planetary nebula in the future.

In the meantime, the brighter star influences the nebula’s appearance. As the pair continues to orbit one another, they “stir the pot” of gas and dust, causing asymmetrical patterns.

Because this is an infrared image, the colors are not natural, but were assigned based on the slightly different infrared wavelengths produced by the object’s different features. From the image’s webpage:

Several filters were used to sample narrow and broad wavelength ranges. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter.

Eventually astronomers will use Webb to look at many astronomical objects that Hubble has been observing for the past thirty years, adding a high resolution infrared view that will add to Hubble’s views.

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Superheavy prototype #7 explodes during tanking test

8:37 am

Capitalism in space: SpaceX’s Superheavy prototype #7 exploded yesterday during a tanking test in Boca Chica, Texas.

I have embedded the video of the explosion below, cued to just before it occurred.

According to Musk, the engineering teams are presently assessing damage. The booster itself appeared relatively intact afterward, though leaning slightly to one side.

At a minimum this incident will delay the orbital launch attempt, especially if booster #7 must be replaced with booster #8, already being prepped in the assembly building nearby.

» Read more

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First science image released from Webb

3:40 pm

Webb's first deep field image
Click for original image.

The first science image from the James Webb Space Telescope has now been unveiled.

That image is to the right, reduced to post here. From the press release:

Known as Webb’s First Deep Field, this image of galaxy cluster SMACS 0723 is overflowing with detail. Thousands of galaxies – including the faintest objects ever observed in the infrared – have appeared in Webb’s view for the first time. This slice of the vast universe covers a patch of sky approximately the size of a grain of sand held at arm’s length by someone on the ground.

This deep field, taken by Webb’s Near-Infrared Camera (NIRCam), is a composite made from images at different wavelengths, totaling 12.5 hours – achieving depths at infrared wavelengths beyond the Hubble Space Telescope’s deepest fields, which took weeks.

The image shows the galaxy cluster SMACS 0723 as it appeared 4.6 billion years ago. The combined mass of this galaxy cluster acts as a gravitational lens, magnifying much more distant galaxies behind it. Webb’s NIRCam has brought those distant galaxies into sharp focus – they have tiny, faint structures that have never been seen before, including star clusters and diffuse features.

The smeared concentric arrangement of many reddish objects surrounding the picture’s center strongly suggests we are seeing distortion by the gravity of this galaxy cluster.

While nothing in this image appears at first glance to be different than many earlier Hubble images, it looks at objects in the infrared that are much farther away than anything ever seen before, farther than Hubble in the optical could see. To understand the new discoveries hidden in such an image will likely take several years of further research. For example, before astronomers can understand what this image shows they need to determine the red shift of each galaxy, thus roughly determining its distance and the overall 3D structure of the objects visible. Moreover, the consequences of the gravitational lensing must be unpacked.

The White House briefing itself was somewhat embarrassing to watch, as Vice President Kamala Harris, President Joe Biden, and NASA administrator Bill Nelson all struggled to explain what this image shows, and failed miserably. Moreover, the briefing had technical problems, started very late, and it appeared that Bill Nelson especially had no idea what he was looking at. The briefing also ended very abruptly when it shifted to reporters’ questions.

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Collapse pits on Mars

2:08 pm

Elongated collapse pit on Mars
Click for full image.

Cool image time! The photo to the right, cropped to post here, was taken on May 21, 2022 and was today’s picture of the day from the high resolution camera on Mars Reconnaissance Orbiter (MRO). Dubbed “An Elongated Collapse Pit” by the science team, their caption explains:

This observation can help to tell whether or not there is a subterranean connection to this pit. As an added bonus, the much smaller depression to its south also appears to be another collapse pit.

This image had already been in my queue for a future cool image post, but since the scientists have posted it, it is time that I did as well.

In the inset I have brightened the image drastically to try to illuminate the darkest spots in both pits. The elongated pit appears to slope downward towards a hole in the southeast corner, while the interior of the second pit to the south remains completely dark. Both appear to suggest a void below that both reach.

The wider context image and overview map below shows that there is further evidence of more voids in this region of Mars, dubbed Ceraunius Fossae, because of its many north-south parallel fissures.
» Read more

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More lacy Martian rocks

9:59 am

lacy Martian rock
Click for full image.

Cool image time! Because the Curiosity team is presently conducting a drilling campaign at its present position in the lower mountains of Gale Crater, the rover has not moved in the past few weeks. At these times, the science team also has the rover’s other cameras do extensive surveys of the surrounding terrain, including high resolution mosaics by its high resolution camera.

To the right is one photo from the most recent mosaic, cropped to post here. It was taken on July 10, 2022, and shows one many layered rock on the ground near the rover. Though no scale is provided, I suspect the extended flake from this rock is somewhere between six to twelve inches long.

Another illustration of the alien nature of Mars. This flake could not exist on Earth, where the heavier gravity and atmosphere would have acted to break it.

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Biden to unveil first Webb science image today

9:27 am

This should be entertaining: NASA today announced that the unveiling of the first science image from the James Webb Space Telescope has been moved up to later today, so that President Joe Biden can do the unveiling from the White House. From the NASA tweet:

We can’t contain the excitement for @NASAWebb’s first full-color images!

On Monday, July 11 at 5pm ET (21:00 UTC), President Biden will unveil one of the space telescope’s first images of deep space as a preview of what’s ahead.

It appears that the picture Biden will use in this photo op will be the only deep field cosmological picture scheduled for release:

SMACS 0723: Massive foreground galaxy clusters magnify and distort the light of objects behind them, permitting a deep field view into both the extremely distant and intrinsically faint galaxy populations.

The remaining four images will still be released on July 12, 2022, as originally planned.

The live stream of this event will be broadcast on NASA TV.

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SpaceX launches another 46 Starlink satellites

6:49 pm

Capitalism in space: Using its Falcon 9 rocket, SpaceX today successfully launched another 46 Starlink satellites from Vandenberg Space Force Base in California.

The first stage completed its sixth flight, landing on the drone ship in the Pacific.

A minor note: SpaceX has clearly decided to simplify these broadcasts. Each is now starting much closer to launch, and the announcers have reduced their narration to the absolute minimum. Overall, this seems a wise policy, because though these live streams are good advertising, most of the people listening at this point do not need detailed explanations of everything. If anything, too much chatter is annoying, and as always less is more.

The leaders in the 2022 launch race:

29 SpaceX
21 China
9 Russia
4 Rocket Lab
4 ULA

The U.S. now leads China 41 to 21 in the national rankings, and the entire world combined 41 to 36. The forty-one launches in just over half of ’22 beats the U.S.’s total for the whole year just two years ago.

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Elon Musk gives a tutorial on the Raptor-2 engine

6:16 pm

Tim Dodd of Everyday Astronaut on Friday released another video from his most recent tour of Starbase at Boca Chica with Elon Musk. I have embedded it below.

Essentially, this 41 minute video is Elon Musk giving us a tutorial on how SpaceX simplified and improved its Raptor engines from its first iteration to the present Raptor-2. He does this while standing in front of a long row of finished Raptor-2s, all meant for installation in the seventh prototype of Superheavy, the booster now on the launchpad with those engines installed and being prepared for its first static fire test prior to the orbital flight.

Musk revealed two interesting factoids during this video. First SpaceX blew up approximately 20 to 30 Raptor engines during the development phase, and melted the chambers on another 50. All of this was perfectly acceptable, because they designed engine manufacture so that a high production rate was built in. As Musk noted, “A high production rate solves many ills.” Losing engines during testing and development was no big deal because they were able to quickly replace them, with revisions and upgrades.

Secondly, Musk claimed that the Raptor-2 engine has a 99% efficiency, a level of efficiency that is unheard of in any engine for any purpose ever. I wonder if that claim will hold up as new companies and engineers work to beat SpaceX in the coming centuries.

» Read more

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A galaxy with swirling arms

9:17 am

A galaxy with swirling arms
Click for full image.

Cool image time! The picture to the right, cropped and reduced to post here, was released yesterday by the science team that operates the Hubble Space Telescope. It captures a galaxy about 520 million light years away that appears to have been reshaped due to a galaxy merger.

That merger somehow distorted the disk of the inner galaxy, the brightest area, while also producing two sweeping spiral streams in the surrounding periphery.

Despite its unusual shape, astronomers did not choose to study this galaxy. From the caption:

This observation is a gem from the Galaxy Zoo project, a citizen science project involving hundreds of thousands of volunteers from around the world who classified galaxies to help scientists solve a problem of astronomical proportions: how to sort through the vast amounts of data generated by telescopes. A public vote selected the most astronomically intriguing objects for follow-up observations with Hubble. CGCG 396-2 is one such object, imaged here by Hubble’s Advanced Camera for Surveys.

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The colorful layers of the Martian north pole icecap

1:44 pm

Colorful layers in the Martian north pole ice cap
Click for full image.

Wider view
Click for full image.

Today’s cool image above, rotated, reduced, and annotated to post here, comes from today’s picture of the day for the high resolution camera on Mars Reconnaissance Orbiter (MRO), which in turn is a retrospective of a captioned image first taken in 2010. The photo to the right, rotated, cropped, and reduced to post here, shows a larger area to provide some context. For this image north is towards the top. The rectangle indicates the area covered by the picture above.

The ice cap at the north pole is about 600 miles across and a little less than 7,000 feet deep, made up of many layers that are a mixture of water ice and cemented dust and sand. From the picture’s caption:

In many locations erosion has created scarps and troughs that expose this layering. The tan colored layers are the dusty water ice of the polar layered deposits; however a section of bluish layers is visible below them. These bluish layers contain sand-sized rock fragments that likely formed a large polar dunefield before the overlying dusty ice was deposited.

The lack of a polar ice cap in this past epoch attests to the variability of the Martian climate, which undergoes larger changes over time than that of the Earth.

The overview map below provides some further context.
» Read more

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NASA announces the targets picked for Webb’s first science images

10:20 am

NASA today announced the astronomical targets scientists have chosen for the first infrared science images taken by the James Webb Space Telescope which will be unveiled on July 12, 2022.

  • Carina Nebula. The Carina Nebula is one of the largest and brightest nebulae in the sky, located approximately 7,600 light-years away in the southern constellation Carina. Nebulae are stellar nurseries where stars form. The Carina Nebula is home to many massive stars, several times larger than the Sun.
  • WASP-96 b (spectrum). WASP-96 b is a giant planet outside our solar system, composed mainly of gas. The planet, located nearly 1,150 light-years from Earth, orbits its star every 3.4 days. It has about half the mass of Jupiter, and its discovery was announced in 2014.
  • Southern Ring Nebula. The Southern Ring, or “Eight-Burst” nebula, is a planetary nebula – an expanding cloud of gas, surrounding a dying star. It is nearly half a light-year in diameter and is located approximately 2,000 light years away from Earth.
  • Stephan’s Quintet: About 290 million light-years away, Stephan’s Quintet is located in the constellation Pegasus. It is notable for being the first compact galaxy group ever discovered in 1877. Four of the five galaxies within the quintet are locked in a cosmic dance of repeated close encounters.
  • SMACS 0723: Massive foreground galaxy clusters magnify and distort the light of objects behind them, permitting a deep field view into both the extremely distant and intrinsically faint galaxy populations.

That only the last image is focused on distant deep space cosmology, the scientific research that Webb’s infrared instruments are optimized for suggests that NASA wishes to highlight the telescope’s other observational possibilities.

The images will be released one by one during a press conference beginning at 10:30 am (Eastern) on July 12th. It is once again important to note that though the images are likely to be spectacular, they will be false color infrared images measuring the heat produced by the objects, not optical images that we could see with our eyes.

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OSIRIS-REx’s sample grab at Bennu in 2020 proved the rubble-pile asteroid has far less cohesion than predicted

10:10 am

The post touchdown crater on Bennu

The OSIRIS-REx science team, using data gathered during the spacecraft’s sample grab at Bennu in 2020, has determined that the rubble-pile asteroid has far less cohesion than predicted, with its rubble behaving less like a solid object and more like the playground ball-pits found in amusement parks.

After analyzing data gathered when NASA’s OSIRIS-REx spacecraft collected a sample from asteroid Bennu in October 2020, scientists have learned something astonishing: The spacecraft would have sunk into Bennu had it not fired its thrusters to back away immediately after it grabbed dust and rock from the asteroid’s surface.

It turns out that the particles making up Bennu’s exterior are so loosely packed and lightly bound to each other that if a person were to step onto Bennu they would feel very little resistance, as if stepping into a pit of plastic balls that are popular play areas for kids.

The image above shows what the touch down crater looked like after the sample grab, taken from the video that was part of the press release. The false colors indicate the depth changes produced by the touch down. The final crater was 26 feet across and more than two feet in depth, far larger than expected. Moreover, the energy from the spacecraft’s thrusters as it lifted off had increased the size of that crater further, by about 40%.

These results about the asteroid’s lack of cohesion match the earlier results studying a different impact crater on Bennu.

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Dish Network condemns Starlink and SpaceX study

9:42 am

Constellation wars! In an apparent response to the FCC’s decision last week to reject the Dish network’s request that the agency block Starlink from using the 12GHz frequency band so that Dish could use it, Dish (as part of a coalition) now claims that SpaceX’s study on the use of that band is “scientifically and logically flawed” and used “cherry-picked” data.

While the FCC had rejected Dish’s blocking request, it also said it was still studying whether Starlink’s orbital system and Dish’s ground-based system could both use the frequency at the same time. Today’s statement is obviously Dish’s effort to influence that FCC study.

The coalition’s full statement also said this about the request by Starlink to its customers to send their own comments to the FCC:

In addition to this manipulated filing, Starlink has initiated a public misinformation campaign by falsely telling customers and the public that coexistence is not possible in the band among Starlink and 5G services – despite nationwide data proving otherwise. This tactic, which is commonly used by Elon Musk, is not only disingenuous, but it promulgates an anti-5G narrative that is harmful to American consumers who deserve greater competition, connectivity options and innovation. It also stands to threaten America’s global leadership in the 5G and technology sector as other countries outpace the nation in delivering next-generation services.

This constellation war has hardly begun. Expect politicians to soon get involved, both pro and con, prompted by campaign contributions from the commercial players (which when paid to ordinary we call it “bribes”).

Meanwhile, SpaceX announced yesterday that Starlink is now offering its service to boat owners, though the service is hardly cheap.

Starlink Maritime costs $5,000 per month, plus an initial $10,000 fee that covers two high-performance satellite dishes. It promises to deliver download speeds of 350 Mbps. Regular Starlink internet costs $110 per month, along with $599 for the necessary hardware.

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X-37B sets new in-orbit record

9:23 am

The Space Force’s X-37B reusable mini-shuttle that is presently in orbit has now set a new mission record, spending more than 781 days in orbit.

As of today (July 7), the X-37B has been in Earth orbit for 781 days, breaking its previous record of 780. The reusable vehicle designed and built by Boeing is currently flying on its sixth mission, known as Orbital Test Vehicle-6 or OTV-6, which launched on May 17, 2020.

During this long flight one of the spacecraft’s few unclassified experiments successfully tested the conversion of solar power into beamed microwave energy.

The second X-37B in the fleet remains on the ground, having completed its 780 day mission in October 2019. We also do not know when the military will order the return of the X-37B in orbit. Only then will the mission really be a success.

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From the rim to the floor of Valles Marineris

5:01 pm

Overview map

From the rim to the floor of Valles Marineris
Click for full image.

For today’s cool Martian image, we begin from afar and zoom in. The overview map above shows the solar system’s largest canyon, Valles Marineris, 1,500 miles long, and 400 miles wide at its widest. The white dot on the north rim of the section of the canyon dubbed Melas marks the location of the photo to the right, rotated, cropped and reduced to post here and taken on January 28, 2011 by the wide angle context camera on Mars Reconnaissance Orbiter (MRO).

I have added elevation numbers to this picture to give it some understandable scale. From the rim to the interior canyon floor — a distance of about ten miles — the canyon wall drops about 19,000 feet. Compare this with Bright Angel Trail in the Grand Canyon, which from the rim to the Colorado River drops about 4,400 feet in about the same distance. The wall of Valles Marineris is about four times steeper.

Even that doesn’t give you the full scale. Having hiked down to that interior canyon floor, you are still about 10,000 feet above Valles Marineris’s main canyon floor, with fifteen more miles of hiking to go to reach it.

The white rectangle marks the area covered by the MRO high resolution image below.
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CAPSTONE completes mid-course correction

10:39 am

Engineers at Advanced Space today successfully completed CAPSTONE’s first mid-course correction, following a quick investigation that determined why communications with the probe was lost for almost a full day.

The communications blackout was apparently due to software issues and human error.

During [in-flight] commissioning of NASA’s CAPSTONE (short for Cislunar Autonomous Positioning System Technology Operations and Navigation Experiment) spacecraft, the Deep Space Network team noted inconsistent ranging data. While investigating this, the spacecraft operations team attempted to access diagnostic data on the spacecraft’s radio and sent an improperly formatted command that made the radio inoperable. The spacecraft fault detection system should have immediately rebooted the radio but did not because of a fault in the spacecraft flight software.

CAPSTONE’s autonomous flight software system eventually cleared the fault and brought the spacecraft back into communication with the ground, allowing the team to implement recovery procedures and begin commanding the spacecraft again.

All looks good for a November 13, 2022 arrival in lunar orbit.

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