Year: 2020

Isidis Basin, on whose margin Perseverance will roam

1:20 pm

Pedestal craters in Isidis Basin
Click for full image.

Overview map

Today’s cool image to the right, cropped and reduced to post here, highlights the floor of one of Mars’ largest basins, dubbed Isidis Planitia, and located at the transition zone between the planet’s northern lowland plains and the southern cratered highlands.

The overview map below of Isidis Basin provides some context. The white box shows where this particular image is located. Jezero Crater, indicated by the red circle (which is also about the size of the crater), is where the rover Perseverance is going to land and roam come February 2021, should all go well. For scale, Isidis is about the size of the eastern half of the United States. If Chicago was located at Jezero Crater, Baltimore would be on the basin’s eastern edge, at around 4 o’clock.

This particular section of the full photo, taken on April 5, 2020 by the high resolution camera on Mars Reconnaissance Orbiter (MRO), shows many features very typical of the floor of Isidis Basin, which also immediately reveal a great deal about its possible history.

In this small snippet we can see what at first glance appear to be pedestal craters standing up like mesas, with ordinary craters scattered about on that lower surrounding terrain. Clearly, if these are pedestal craters they had to have been created first, and then over a very long time erosion processes ate away at that plain, leaving these pedestals (which had become resistant to erosion because the impact had packed their material together and made it harder) behind as mesas.

Then, after this period of erosion was complete enough additional time was required for at least one or two rounds of cratering to occur, leaving behind the many more younger craters on the plain floor, many of which are now partly buried by dust and sand.

The problem is that these mesas are almost certainly not pedestal craters, despite their appearance. » Read more

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New analysis of COVID-19 death rate ranks it the same as “a strong seasonal flu”

8:51 am

A new analysis of the COVID-19 death rate has found that it is really no more dangerous than “a strong seasonal flu”, and that it poses little threat to the general population.

Moreover, the analysis finds that

Up to 30% of all additional deaths may have been caused not by Covid19, but by the effects of the lockdown, panic and fear. For example, the treatment of heart attacks and strokes decreased by up to 60% because many patients no longer dared to go to hospital. Even in so-called “Covid19 deaths” it is often not clear whether they died from or with coronavirus (i.e. from underlying diseases) or if they were counted as “presumed cases” and not tested at all. However, official figures usually do not reflect this distinction.

Read it all. There is lots more, all pointing to the unwarranted nature of the panic over the flu, and how that panic likely caused more deaths and damage. Had we reacted more calmly (as had been done for all past similar new such respiratory diseases), the harm to society and number of deaths would have likely been less.

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Marble race

6:01 pm

An evening pause: I actually would do this with my marbles as a child. All you needed was a gentle slope and a way to keep the marbles confined within the track. For me, it was a gap between the carpet and one wall in the living room of our rented apartment. The floor just happened to slope just enough.

What is amazing is how you can’t help but pick a marble and cheer for it.

Hat tip Rex Ridenoure of Ecliptic Enterprises.

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New Horizons sees stellar parallax

3:04 pm

New Horizons is now far enough away from Earth that its perspective of the universe shifts at least two nearby stars into slightly different positions than seen on Earth.

On April 22-23, the spacecraft turned its long-range telescopic camera to a pair of the closest stars, Proxima Centauri and Wolf 359, showing just how they appear in different places than we see from Earth. Scientists have long used this “parallax effect” – how a star appears to shift against its background when seen from different locations — to measure distances to stars.

An easy way to see parallax is to place one finger at arm’s length and watch it jump back and forth when you view it successively with each eye. Similarly, as Earth makes it way around the Sun, the stars shift their positions. But because even the nearest stars are hundreds of thousands of times farther away than the diameter of Earth’s orbit, the parallax shifts are tiny, and can only be measured with precise instrumentation. “No human eye can detect these shifts,” Stern said.

But when New Horizons images are paired with pictures of the same stars taken on the same dates by telescopes on Earth, the parallax shift is instantly visible. The combination yields a 3D view of the stars “floating” in front of their background star fields.

The resulting 3D image, available at the link, is very cool. Both stars clearly appear closer than the surrounding background stars, which of course is true as they are among the closest stars to the Sun.

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Trump had better do something soon

1:57 pm

In Seattle on June 9, 2020 a group of rioters and Antifa and Black Lives Matter radicals took complete control over a seven block wide area of the city, throwing out the police, taking possession of the police station, and declaring the area the Capital Hill Autonomous Zone (CHAZ).

The next day, June 9th, President Donald Trump tweeted the following:

Radical Left Governor @JayInslee and the Mayor of Seattle are being taunted and played at a level that our great Country has never seen before. Take back your city NOW. If you don’t do it, I will. This is not a game. These ugly Anarchists must be stooped (sic) IMMEDIATELY. MOVE FAST!

Not surprisingly the response from the Washington Democratic politicians was contempt and defiance.

Gov. Jay Inslee also fired back at Trump on Twitter, posting, “A man who is totally incapable of governing should stay out of Washington state’s business. ‘Stoop’ tweeting.”

I think their contempt here is justified. Trump, who until the arrival of the Wuhan flu panic this spring had consistently stood up against the bullying and irrational hate of the left, has been played by them badly in the past three months.
» Read more

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NASA IG: Bolden misused NASA resources after leaving agency

9:45 am

According to a new NASA inspector general report released today [pdf], former NASA administrator Charles Bolden improperly used the services of his NASA executive assistant for two years after his resignation, and that misuse included aiding him in building his private consulting firm.

The [inspector general] concluded that the EA [Executive Assistant] inappropriately provided significant administrative assistance to Bolden to include managing his personal and business appointments, making travel arrangements, and coordinating special requests for almost 2 years, from his departure in January 2017 through December 2018. We further found that the EA’s assistance helped facilitate the growth of Bolden’s private consulting business and, as a result, Bolden was able to hire the EA as an employee upon her retirement from NASA in early 2019.

The report is remarkable kind to Bolden, making many attempts to excuse this essentially illegal abuse of government resources for private gain. But then, he is a Democrat who worked for the Democratic Obama administration, and if there is anything we have learned in the past decade, it is that there is an unwritten law in DC that states that no Democrat shall ever be punished for any crimes.

In Bolden’s defense, the report states the following,

Bolden took full responsibility for his actions, offered to provide reimbursement for the services he had received, and recommended that in the future specific guidance be provided to departing senior executives as to what type of administrative support they could expect to receive, if any.

I really wonder if anyone can really assign a number to this work. Moreover, there is no evidence in the report that Bolden has actually reimbursed the agency. Based on past such incidents, I am very doubtful such reimbursement will ever happen. The tactic each time has been to make a loud announcement of contrition, but then when things quiet down to conveniently forget about it.

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India’s first manned mission faces delays, caused by COVID-19

9:20 am

The new colonial movement: According to ISRO officials, India’s first manned mission, Gaganyaan, might have to be delayed because of restrictions imposed due to the Wuhan flu panic.

Bengaluru-headquartered ISRO (Indian Space Research Organisation) had earlier said it has planned two trial flights without crew ahead of Gaganyaan — the first one around December 2020 and the second around July 2021.

“…there are some disturbances because of COVID, but still nothing is confirmed (about delay). We need to see, still we have got some six months time. We are trying to see if we can reach there,” a senior ISRO official told P T I. He added: “There may be slight up and down (in the schedule), but that will be known only when we do the complete evaluation…it is premature to say anything, because the team that is working (on the project) has not indicated (about delay).”

The manned flight is presently scheduled for 2022. This might change.

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NASA confirms Webb launch delayed again

9:16 am

NASA officials yesterday confirmed that, due to the new work conditions and the lock down imposed by the Wuhan flu panic, the launch of the James Webb Space telescope will not occur in March 2021.

“We will not launch in March,” said Thomas Zurbuchen, the space agency’s associate administrator for science. “Absolutely we will not launch in March. That is not in the cards right now. That’s not because they did anything wrong. It’s not anyone’s fault or mismanagement.”

Zurbuchen made these comments at a virtual meeting of the National Academies’ Space Studies Board. He said the telescope was already cutting it close on its schedule before the COVID-19 pandemic struck the agency and that the virus had led to additional lost work time. “This team has stayed on its toes and pushed this telescope forward at the maximum speed possible,” he said. “But we’ve lost time. Instead of two shifts fully staffed, we could not do that for all the reasons that we talk about. Not everybody was available. There were positive cases here and there (in the surrounding area, not on site). And so, perhaps, we had only one shift.”

No new target date has been set, though the comments even hinted that they might not be able to do it in 2021.

Webb will cost 20 times more than originally budgeted ($500 million vs $10 billion) and is now more than a decade behind schedule. In the process, those overages and delays wiped out almost all of NASA’s other astronomy projects during the 2010s.

But don’t worry! Once Webb launches the task of wiping out more astronomy projects with overages and delays will be courageously taken up by NASA’s Roman Space Telescope (formerly WFIRST), already behind schedule and over budget, and it is still only in the design phase.

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Astrobotic wins contract to land VIPER rover at Moon’s south pole

9:03 am

Capitalism in space: NASA today awarded the private company Astrobotic a $199 million contract to provide the lander that place place the agency’s VIPER rover down near Moon’s south pole.

The target date for the mission is late 2023, and is intended as a scouting mission for the Artemis manned landing to follow.

During its 100-Earth-day mission, the approximately 1,000-pound VIPER rover will roam several miles and use its four science instruments to sample various soil environments. Versions of its three water-hunting instruments are flying to the Moon on earlier CLPS lander deliveries in 2021 and 2022 to help test their performance on the lunar surface prior to VIPER’s mission. The rover also will have a drill to bore approximately 3 feet into the lunar surface.

The key to this mission continues to be NASA’s shift from building things to hiring others to build them. If Astrobotic is successfully, they will then be positioned to offer their lander design to others, since it belongs to them, not NASA.

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Chinese launch and Rocket Lab scrub

11:36 pm

Electron on launchpad, June 11, 2020

Yesterday China used its Long March 2C rocket to launch an ocean observation satellite, while also testing both grid fins and a revamped fairing. The goal of the grid fins is to control the first stage’s return to Earth so that it won’t crash on top of any homes. The fairing change is to hopefully lead to their capture and reuse sometime in the future.

Late today, or actually early on June 11th, Rocket Lab tried to do its twelve commercial launch, but after three launch tries the high winds won out and they had to scrub. The image to the right shows the Electron rocket on the launchpad. If you look close, you can see the wind whipping the LOX evaporating off the rocket.

The leaders in the 2020 launch race:

11 China
8 SpaceX
7 Russia
3 ULA

The U.S. continues to lead China 13 to 11 in the national rankings.

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Kodo – O-Daiko

6:01 pm

An evening pause: Japanese drummers playing the Ōdaiko drum

Ōdaiko : One of the most memorable drums of many taiko ensembles is the ōdaiko (大太鼓). For many, the ōdaiko solo is the embodiment of power due to the size of the drum, the volume, and the endurance it takes to perform. The ōdaiko is the largest drum of all taiko, if not the entire world. The largest ōdaiko are too big to move and permanently reside inside a temple or shrine. Ōdaiko means “big taiko”, but within any group, it describes the largest drum in an ensemble, which could mean 12 inches (300 mm) in diameter or 12 feet (3.7 m) in diameter. Made from a single piece of wood, some ōdaiko come from trees that are hundreds of years old.

Hat tip Roland.

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