Author: Robert Zimmerman

Changing slope streaks on Mars

3:08 pm

Overview map

Changing slope streaks on Mars
Click for full image.

Cool image time! The photo to the right, cropped and reduced to post here, was taken on July 20, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows what the scientists have labeled a “Splitting Slope Streak” on a mound/hill near the equator and located almost midpoint between the giant volcano Olympus Mons about 2,000 miles to the east and the almost as big volcano Elysium Mons about 2,500 miles to the west. The white cross on the overview map above marks this location, north of the Medusae Fossae volcanic ash deposit.

The slope streak in question is the biggest and darkest at about 7 o’clock. Slope streaks are a feature unique to Mars that remain as yet unexplained. They are not ordinary avalanches, despite their appearance. They seem to have no effect on the topography, and thus are more a stain on the surface. Moreover, some are bright, some dark, and all happen randomly and fade with time. Some think they may be brine-related, while others link them to dust. No theory explains them completely.

What makes this slope streak interesting is that it is relatively new. Compare it with the picture taken in 2016 below.
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Pushback: Chants of “Vote them out!” overwhelm school board meeting

12:11 pm

Roxanne McDonald thinking she is in charge.
School board president Roxanne McDonald,
thinking she is in charge.

Bring a gun to a knife fight: A school board meeting in Dearborn, Michigan, had to be shut down when a mostly Muslim crowd of parents (with some Christians as well) became outraged by what appeared to be resistance by the school board to their demand that various books advocating the queer agenda be removed from the public school libraries.

As the meeting progressed, interruptions from the crowd became louder and increasingly frequent, despite calls from board members for decorum and respecting the right of others to speak.

Chants of “vote them out,” broke out when school board president Roxanne McDonald said a three-minute limit per speaker would be strictly enforced. The room was also far over its occupancy limit, and after the crowd ignored multiple orders for people to move into two overflow rooms, board members ended the meeting prior to the public comment period.

The video below shows the situation leading up to the board shutting down the meeting. Watch it and tell me if you do not think board president Roxanne McDonald is a self-righteous petty dictator who has utter contempt for the parents who are there.
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The known near Earth asteroid catalog now tops 30,000

9:35 am

Chart of NEA's discovered over time

The catalog of known near Earth asteroids that have been identified using a number of survey telescopes in space and on the Earth now totals 30,039. As defined at the link:

An asteroid is called a near-Earth asteroid (NEA) when its trajectory brings it within 1.3 Astronomical Units (au) of the Sun. 1 au is the distance between the Sun and Earth, and so NEAs can come within at least 0.3 au, 45 million km, of our planet’s orbit.

Currently, near-Earth asteroids make up about a third of the roughly one million asteroids discovered so far in the Solar System. Most of them reside in the asteroid belt between Jupiter and Mars.

NEAs are also called NEOs (Near Earth Objects). The chart above, produced by the Center for NEO Studies which tracks these objects, shows the number of NEAs discovered over time.

Of the 30,039 now known, about 1,400 have orbits with “a non-zero” chance of hitting the Earth. None however will do so in the next hundred years at least.

Though the pace of discovery is vastly improving — as indicated by the steep rise in the curve in the graph — only when that curve begins to flatten out will we know that we are getting close to having a more-or-less complete survey of these objects.

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TESS enters safe mode

9:18 am

The science team for TESS (Transiting Exoplanet Survey Satellite) revealed yesterday that the spacecraft had entered safe mode on October 10th.

The spacecraft is in a stable configuration that suspends science observations. Preliminary investigation revealed that the TESS flight computer experienced a reset. The TESS operations team reported that science data not yet sent to the ground appears to be safely stored on the satellite. Recovery procedures and investigations are underway to resume normal operations, which could take several days.

TESS has been in orbit since 2018, where it has been repeatedly taking survey images of the entire sky. Astronomers then compare these images to see if they can spot exoplanet transits (as well as any other new phenomenon). So far 250 exoplanets have been identified.

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China launches Earth observation radar satellite

9:13 am

Using its Long March 2C rocket, China today successfully launched a new Earth observation radar satellite.

As is usual for Chinese launches from interior spaceports, the rocket dumped its lower stages somewhere within China.

The leaders in the 2022 launch race:

46 SpaceX
44 China
14 Russia
8 Rocket Lab
7 ULA

American private enterprise still leads China 66 to 44 in the national rankings. It is now tied with the entire world combined 66 each.

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Ispace targets November 9-15 launch window for first commercial lunar lander

9:07 am

The private Japanese company Ispace has now scheduled the launch of its commercial lunar lander Hakuto-R on a SpaceX Falcon 9 rocket for a November 9-15, 2022 launch window.

Though the lander’s primary goal is to see if this lander will work, it also includes several customer payloads, the most significant of which is the Rashid rover from the United Arab Emirates. Rashid, which is about the size of a Radio Flyer red wagon, will operate for one lunar day, about two weeks. While its main mission is to test the engineering and to train the engineers who built it, it will have two cameras for taking pictures. In addition, on its wheels are test adhesive patches of different materials, designed to see how each material interacts with the Moon’s abrasive dust.

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October 12, 2022 Zimmerman/Pratt on Texas podcast on blacklisting

2:58 pm

Today Robert Pratt posted a long form special interview with me on his Pratt on Texas podcast, specifically discussing the ugly blacklisting culture that exists in America today. The podcast can be listened to here.

I have also embedded it below. The inteview lasts about 40 minutes, and covers a number of the ugliest recent stories that I have written about.
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October 12, 2022 Quick space links

2:34 pm

Courtesy of BtB’s stringer Jay, who trolls twitter so the rest of us don’t have to.

  • Amazon will launch two Kuiper test satellites on first Vulcan launch

    • That launch is tentatively scheduled for the first quarter of ’23, but don’t bet on it. Moreover, this means Amazon is gambling its first Kuiper launch on an untested rocket.

    Even if it does happen, Kuiper has taken years to get started, and is way behind SpaceX’s Starlink constellation, even though both were first announced at about the same time.

 

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An icy hollow on Mars

2:07 pm

A icy hollow on Mars
Click for full image.

Cool image time! The photo to the right, cropped, reduced, and enhanced to post here, was taken on August 20, 2022 by the high resolution camera on Mars Reconnaissance Orbiter (MRO). It shows a somewhat typical example of the many ice scarps that scientists have identified in MRO pictures.

Though this is not a hard fast rule, most of the ice scarps so far found tend to have the steep cliff on the pole-facing side, with the scarp very slowly retreating towards the equator. In today’s example, the scarp where an ice layer in the cliff wall has been identified is indicated by the white arrow, though three sides of the hollow, on the east, north, and west sides, could all also have exposed ice.

Nor is that the only likely ice at this location at 56 degrees south latitude. The stippled plain surrounding the hollow clearly looks like an eroded ice layer, likely covered with a thin protective coat of dust to protect if from quickly sublimating away. The dark streaks across this surface are likely dust devil tracks.

As documented by the global map below, Mars is like Antarctica, a desert with water ice everywhere.
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Pushback: Teacher suspended for not submitting to queer agenda immediately reinstated when hundreds protest at board meeting

12:16 pm

Total victory

Bring a gun to a knife fight: This story begins in late September when the South Side Area School District in Pennsylvania decided it and all its teachers must comply with the insane queer agenda. According to the new policy, outlined in a letter, all of its teachers were ordered to use the pronouns that any student demanded of them. To the district, it didn’t matter if the student was eight or eighteen, if any student on a whim wanted to identify as a boy, then a girl, or then maybe even a tiger, the teachers were required to comply.

Daren Cusato, a biology teacher in the district for 30 years, refused. He sent a letter back to the district, explaining this violated both his Christian beliefs and his first amendment rights.

“Love the sinner but hate the sin,” said RJ Cusato, Daren’s son. “We don’t support what they’re doing but still love the person. He doesn’t have any problem with the students. We have no problems with the kids at all, he just doesn’t want to support what they’re doing. He doesn’t want to give them a pat on the back if they’re doing something he doesn’t think is right.”

The district’s response was immediate.
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