Talk Talk — It’s My Life
An evenig pause: Hat tip Diane Zimmerman.
A chain of Martian sinkholes
Click for full image.
Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on June 17, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a somewhat straight depression with several wider and deeper pits along it.
The feature immediately suggests sinkholes that exist because the ground is sagging into voids below ground. Yet, both the straight and circular depressions also appear filled, showing no evidence that they connect to any below ground cavities.
Are the sinks the result of a fissure produced by a graben, when two large blocks shift relative to each other to cause a fissure to appear? Or are they evidence of an underground lava tube? Or maybe they are the filled remains of a now mostly buried canyon carved by water or ice?
As always, a wider view helps clarify things, though whether it answers the question is uncertain.
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On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Today’s blacklisted American: Leftist activist group wants Fox News banned
Blacklists are back and the Democrats have got ’em: A leftist activist veterans group aligned closely with the Democratic Party has begun a campaign to get Fox News banned from all military bases.
The group VoteVets, which works to elect liberal veterans to public office, took specific aim at controversial Fox News personality Tucker Carlson. Mr. Carlson has been at odds with Pentagon leaders in recent months after segments in which he seemed to suggest the U.S. military has become more concerned with diversity and political correctness than winning wars.
But the VoteVets petition steered clear of those issues. Instead, it took aim at Mr. Carlson‘s ambivalent comments about COVID-19 vaccines and specifically blasted a recent segment in which the Fox host said that Democrats want to make life difficult for the unvaccinated.
Essentially, this Democratic Party political organization wants to ban on military bases the speech of anyone who might express skepticism about any policy put forth by that party.
And why not? This tactic by Democrats and their ilk — of blacklisting and silencing their opponents — has been working like a dream. They are finding that Americans are afraid of them, and are willing to meet their every demand in order to avoid being attacked themselves.
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The number of new smallsat rocket startups continues to grow
Capitalism in space: According to a new annual report, the number of new smallsat rocket startups that have been proposed continues to grow, though the number presently in actual development or operation declined slightly in the past year.
That total has grown to 155 vehicles, he said, ranging from 10 vehicles in operation to several dozen that have gone defunct since the survey started in 2015, when about 30 vehicles were included. “I was really expecting to see a slowdown in the number of new launch vehicles that we were seeing coming out of the woodwork in the last few years,” he said during a conference session Aug. 11. “It turns out that slowdown has not happened at all.”
There have been some changes in the industry, though. He found the number of vehicles in active development declined slightly from last year, to 48, with a decrease as well in the number of vehicle concepts on a “watch” list that have not yet entered active development. More than 40 vehicles are now classified as defunct, about 10 more than last year. “This is not surprising given the challenges of getting one of these vehicles fielded,” he said.
The U.S. has the most smallsat startups in development, 22, but China has the most that the report defines as operational, six of ten. This last number should change considerably if the planned launches of six or so American smallsat rocket startups occur as promised in the next six months.
Now available in hardback and paperback as well as ebook!
From the press release: In this ground-breaking new history of early America, historian Robert Zimmerman not only exposes the lie behind The New York Times 1619 Project that falsely claims slavery is central to the history of the United States, he also provides profound lessons about the nature of human societies, lessons important for Americans today as well as for all future settlers on Mars and elsewhere in space.
Conscious Choice: The origins of slavery in America and why it matters today and for our future in outer space, is a riveting page-turning story that documents how slavery slowly became pervasive in the southern British colonies of North America, colonies founded by a people and culture that not only did not allow slavery but in every way were hostile to the practice.
Conscious Choice does more however. In telling the tragic history of the Virginia colony and the rise of slavery there, Zimmerman lays out the proper path for creating healthy societies in places like the Moon and Mars.
“Zimmerman’s ground-breaking history provides every future generation the basic framework for establishing new societies on other worlds. We would be wise to heed what he says.” —Robert Zubrin, founder of the Mars Society.
All editions are available at Amazon, Barnes & Noble, and all book vendors, with the ebook priced at $5.99 before discount. All editions can also be purchased direct from the ebook publisher, ebookit, in which case you don't support the big tech companies and the author gets a bigger cut much sooner.
Autographed printed copies are also available at discount directly from the author (hardback $29.95; paperback $14.95; Shipping cost for either: $6.00). Just send an email to zimmerman @ nasw dot org.
China to fly asteroid sample mission in ’24
The new colonial movement: Chinese scientists have revealed that China is now building an asteroid sample mission to launch in ’24 and grab samples in ’25 from the near Earth asteroid dubbed Kamoʻoalewa.
According to a correspondence in Nature Astronomy, there are two typical approaches to sampling asteroids like Kamoʻoalewa, namely anchor-and-attach and touch-and-go.
The former requires delicate and dangerous interactions with the planetary body but allows more controllable sampling and more chances for surface analysis. The latter, used by Hayabusa 2 and OSIRIS-Rex, is a quick interaction facilitated by advanced navigation, guidance and control and fine control of thrusters.
China’s mission will use both architectures in order to “guarantee that at least one works.” The paper states that there is “still no successful precedent for the anchor-and-attach architecture,” meaning a possible deep space first. A 2019 presentation reveals that China’s spacecraft will attempt to land on the asteroid using four robotic arms, with a drill on the end of each for anchoring.
The attempt to do both these approaches is audacious, especially because the evidence from both OSIRIS-REx and Hayabusa-2 is that it will be difficult to safely land and hold onto a rubble pile asteroid. The material is too loosely held together.
Confirmed: Perseverance sample was too crumbly and poured away
Perseverance scientists have confirmed that the reason their sample container was empty once stored on the rover was because the material that they had drilled into was more crumbly than expected, and when the core was extracted from the ground the powder simply poured out of the core tube.
The team has decided to move on.
Rather than try again with the cratered floor fractured rough, Perseverance has already departed the area and is heading towards a region named South Séítah, which likely contains layered sedimentary rocks that are more similar to the Earth rocks that engineers drilled during tests before the mission’s launch. “We are going to step back and do something we are more confident of,” says Trosper. The rover will try to drill a core there, perhaps in early September. When it does, engineers will pause the automated drilling process to check whether a core has been extracted before the rover takes the next steps of sealing the tube and storing it away.
While it makes sense to find a different place to drill for a core sample, it appears that Perseverance is designed in a manner that it can do no analysis of any drill hole material:
Curiosity and Perseverance are similar in many respects — Perseverance was actually built using much of the leftover hardware from Curiosity — but there is one major difference in how they drill into the Martian surface. Curiosity intentionally grinds rock into powder, which it then places inside analytical instruments it has onboard to conduct scientific studies. NASA designed Perseverance to extract intact cores that slide into its sampling tubes. So crumbly rocks are good for Curiosity, but not for Perseverance.
If Perseverance can do no analysis of any drillholes, this limits the science it can do significantly. While putting aside samples for later return to Earth is an excellent idea, to make this the priority so that Perseverance can analyze nothing seems a terrible decision. What if that sample return mission never gets built?
If my supposition here is correct it also means NASA’s repeated claim that Perseverance is searching for ancient life on Mars is even more of a lie than I had assumed. It isn’t merely that this claim is a distortion of Perseverance’s actual research goals — to study the geology of Mars — the rover can’t look for ancient life. It has no way of looking at any samples it digs up.
I am not sure if my conclusions here are entirely correct. For example, maybe they hope to find this alien evidence by looking at the sealed core samples they store. Unfortunately, I have no idea, because I am somewhat handicapped in describing Perseverance’s day-by-day operations because, unlike Curiosity, the Perseverance team is providing no regular updates of their operations at their blog. While the Curiosity team posts something at least twice a week, the Perseverance team has posted nothing since just after landing in February. I’ve emailed NASA about this, but have gotten no response.
Leaving Earth: Space Stations, Rival Superpowers, and the Quest for Interplanetary Travel, can be purchased as an ebook everywhere for only $3.99 (before discount) at amazon, Barnes & Noble, all ebook vendors, or direct from my ebook publisher, ebookit.
If you buy it from ebookit you don't support the big oppressive tech companies and I get a bigger cut much sooner.
Winner of the 2003 Eugene M. Emme Award of the American Astronautical Society.
"Leaving Earth is one of the best and certainly the most comprehensive summary of our drive into space that I have ever read. It will be invaluable to future scholars because it will tell them how the next chapter of human history opened." -- Arthur C. Clarke
August 11, 2021 Zimmerman/Batchelor podcast
Embedded below the fold in two parts.
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India’s GSLV rocket fails in first launch since 2019
India’s attempt today to resume launches of its large GSLV rocket, stalled because of the Wuhan panic since its last launch in 2019, failed today when something went wrong with the third stage.
This entirely Indian-built rocket is the one they plan to use for their manned missions. This failure will certainly set that program back, already delayed significantly because of the shut down of their entire launch industry because of COVID-19.
The satellite, also Indian-built, is also a big loss. It was to be the first in a series of Earth observation satellites.
Jim Nabors – Impossible Dream
An evening pause: Performed in season four, 1967, of the Gomer Pyle television show, where Nabors played Gomer Pyle as a country bumpkin. When he sang this, however, he shocked not only his sergeant, he surprised the nation, since few knew he was such a polished singer.
The song is from my childhood, when Americans were all hopeful, confident, and knew their nation’s real history, based on liberty and freedom, a history that had strived consistently to achieve that for everyone.
Hat tip Tom Biggar.
OSIRIS-REx scientists refine Bennu’s future Earth impact possibilities
Using the orbital and gravity data compiled during OSIRIS-REx’s visit to the asteroid Bennu, scientists have refined its future orbits as well as the most likely moments it might impact the Earth.
In 2135, asteroid Bennu will make a close approach with Earth. Although the near-Earth object will not pose a danger to our planet at that time, scientists must understand Bennu’s exact trajectory during that encounter in order to predict how Earth’s gravity will alter the asteroid’s path around the Sun – and affect the hazard of Earth impact.
Using NASA’s Deep Space Network and state-of-the-art computer models, scientists were able to significantly shrink uncertainties in Bennu’s orbit, determining its total impact probability through the year 2300 is about 1 in 1,750 (or 0.057%). The researchers were also able to identify Sept. 24, 2182, as the most significant single date in terms of a potential impact, with an impact probability of 1 in 2,700 (or about 0.037%).
Although the chances of it hitting Earth are very low, Bennu remains one of the two most hazardous known asteroids in our solar system, along with another asteroid called 1950 DA.
This paper’s conclusions are confirming what had been found earlier in the mission, while OSIRIS-REx was still flying in formation with the asteroid. Nonetheless, it is essential to refine these numbers as precisely as possible, so this confirmation is excellent news.
Glacial ice sheets on Mars?
Click for full image.
Cool image time! The photo to the right, rotated, cropped, and reduced to post here, was taken on June 29, 2021 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). The location is in Mars’ glacier country, that strip of chaos terrain that runs about 2,000 miles along the transition zone between the northern lowland plains and the southern cratered highlands at 30 to 47 degrees north latitude. This particular feature is located in Deuteronilus Mensae, the westernmost region of that strip of chaos.
I call this glacier country because practically every image taken by MRO’s high resolution camera in this region suggests the presence of glacial material covered by a protective layer of debris. The photo to the right is typical, though a bit more puzzling because of the depressions that appear to run along highpoints.
As usual, the overview map below helps explain what we are looking at.
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Today’s blacklisted American: YouTube blacklists U.S. senator for saying things YouTube dislikes
Senator Rand Paul: censored by YouTube
The new dark age of silencing: YouTube has once again removed videos of Senator Rand Paul (R-Kentucky) while also suspending him for a week, because he stated facts about COVID-19 and masks that YouTube dislikes.
YouTube last week removed a video of an interview the Kentucky Republican senator did on Newsmax. Paul discussed his suspicions about the origins of the coronavirus, his feud with Anthony Fauci over what funding for research in China’s Wuhan lab came from the United States, and argued that most face coverings do not help stop the spread of the virus.
Paul, an eye doctor, then recorded, and on Aug. 3 uploaded, a second video chastising YouTube for taking down the video and promoted one of its competitors, Rumble. He defended his comments on masks. “Saying cloth masks work, when they don’t, actually risks lives, as someone may choose to care for a loved one with COVID while only wearing a cloth mask. This is not only bad advice but also potentially deadly misinformation,” Paul said in the video.
YouTube responded by taking down that video as well, saying that it violated YouTube’s community guidelines. On Tuesday, Paul’s office said that the company imposed a seven-day ban from posting more videos.