Category: Behind The Black

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.
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Today’s blacklisted American: Scientists questioning Big Bang theory protest censorship of their work

11:38 am

Webb's first deep field image
Nothing in Webb’s first deep field image shall be questioned, by anyone!

While the blacklisting described in today’s column has little to do with left vs right politics, it demonstrates clearly that the desire to silence dissent is now culturally pervasive across many fields. In science it has become especially toxic, as this story clearly shows:

Twenty-four astronomers and physicists from ten countries have signed a petition protesting the censorship of papers that are critical of the Big Bang Hypothesis by the open pre-print website arXiv. Run by Cornell University, arXiv is supposed to provide an open public forum for researchers to exchange pre-publication papers, without peer-review. But during June, 2022, arXiv rejected for publication on the website three papers by Dr. Riccardo Scarpa, Instituto de Astrofisica de Canarias, and Eric J. Lerner, LPPFusion, Inc. which are critical of the validity of the Big Bang hypothesis.

…[quoting the petition] “Without judging the scientific validity of the papers, it is clear to us that these papers are both original and substantive and are of interest to all those concerned with the current crisis in cosmology. It plainly appears that arXiv has refused publication to these papers only because of their conclusions, which both provide specific predictions relevant to forthcoming observations and challenge LCDM cosmology [the standard dark matter/dark energy Big Bang hypothesis]. Such censorship is anathema to scientific discourse and to the possibility of scientific advance.

“We strongly urge that arXiv maintain its long-standing practice of being an “open-access archive” of non-peer reviewed “scholarly articles” and not violate that worthy practice by imposing any censorship. Instead, we encourage arXiv to abide by its own principles, and publish these three papers and others like them that clearly provide ‘sufficient original or substantive scholarly research’ results and are of obvious great interest to the arXiv audience.”

Lerner and Scarpa had attempted to get their papers published in a peer review journal and had been stymied, apparently because the topic of their paper was inappropriate for that journal. They then decided to publish on arXiv, which has for almost three decades been open to the publication of all scientific papers written by credentialed scientists, as noted at the website:
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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.

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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.
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Today’s blacklisted American: Lake Superior State University bans free speech

12:17 pm

No first amendment allowed at Lake Superior State University
No free speech allowed at Lake Superior State University

The modern dark age: In June Lake Superior State University earned the Speech Code of the Month award from the Foundation for Individual Rights and Expression (FIRE) for having a vague and oppressive policy towards the placement of posters on campus.

Students wishing to put up posters on campus at Lake Superior State University better choose their words carefully, as the public university’s posting policy threatens “disciplinary sanctioning” over material deemed “offensive, sexist, vulgar, discriminatory or suggestive.” The trouble with this policy is that anyone, for just about any reason, can claim that someone else’s speech is “offensive” or “suggestive.”

Every month, FIRE highlights a university policy that hinders students’ free expression, and we’ve made Lake Superior State’s “Posting Policy” FIRE’s Speech Code of the Month for June.

FIRE’s main complaint about the college’s poster policy is that it is “overbroad” and “vague,” and could be abused to ban almost any speech. Students are thus forced to self-censor out of fear that any proposed poster he or she wishes to post could be deemed “offensive” and not only be banned, but cause the school to impose sanctions against the student.

The policy however is far worse. Note the highlighted phrases from that policy:
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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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