Capitalism in space: SpaceX fifth Starship prototype has passed all of its static fire tests and is now ready for its first flight, a 500 foot vertical hop.
That hop should occur within days.
I have embedded a nice video that summarizes well all of the work being done right now at SpaceX’s Boca Chica facility in Texas, including the construction of large assembly buildings for both Starship and Super Heavy.
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The new colonial movement: The Chinese lunar rover Yutu-2 has completed its 20th lunar day on the farside of the Moon, and has now been put in sleep mode for the long lunar night.
Yutu 2 continued on its planned journey to the northwest of the lander, according to the China Lunar Exploration Program (CLEP). The rover covered 90 feet (27.64 meters) during the lunar day to make a total of 1,610 feet (490.9 m) of roving since setting down on the far side of the moon in January 2019.
The article at the link includes some images, including visual data from the ground-piercing radar that suggests at least four layers in the lunar subsurface.
The tenth anniversary retrospective of Behind the Black continues: The post below, from September 27, 2010, reports on one of the simplest but most profound scientific papers I have ever read. Its advice is doubly needed today, especially commandment #3.
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A scientist’s ten commandments
Published today on the astro-ph website, this preprint by Ignacio Ferrín of the Center for Fundamental Physics at the University of the Andes, Merida, Venezuala, is probably the shortest paper I have ever seen. I think that Dr. Ferrin will forgive me if I reprint it here in its entirety:
1. Go to your laboratory or your instrument without any pre-conceived ideas. Just register what you saw faithfully.
2. Report promptly and scientifically. Check your numbers twice before submitting.
3. Forget about predictions. They are maybe wrong.
4. Do not try to conform or find agreement with others. You may be the first to be observing a new phenomenon and you may risk missing credit for the discovery.
5. Criticism must be scientific, respectful, constructive, positive, and unbiased. Otherwise it must be done privately.
6. If you want to be respected, respect others first. Do not use insulting or humiliating words when referring to others. It is not in accord with scientific ethics.
7. Do not cheat. Cheating in science is silly. When others repeat your experiment or observation, they will find that you were wrong.
8. If you do not know or have made a mistake, admit it immediately. You may say, “I do not know but I will find out.” or “I will correct it immediately.” No scientist knows the answer to everything. By admitting it you are being honest about your knowledge and your abilities.
9. Do not appropriate or ignore other people’s work or results. Always give credit to others, however small their contribution may have been. Do not do unto others what you would not like to be done unto you.
10. Do not stray from scientific ethics.
It seems that some scientists in the climate field (Phil Jones of East Anglia University and Michael Mann of Pennsylvania State University are two that come to mind immediately) would benefit by reading and following these rules.
Embedded below the fold in two parts.
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An evening pause: This sequence from the animated film Robots (2005) is a very typical scene from almost every modern Hollywood film, whether real or animated (though the difference is getting harder to see as they put more and more CGI in every film). Regardless, it is fun, and takes the idea of a Rube Goldberg device to a very strange extreme.
Hat tip Bob Robert.
Capitalism in space: The splashdown of SpaceX’s first manned Dragon capsule Endeavour on August 2nd is now threatened by weather.
Isaias officially became a named tropical storm on Wednesday night, when its wind speeds exceeded 39 mph. The storm could affect several landing areas just as Endeavour is supposed to reenter Earth’s atmosphere, deploy its parachutes, and splash into the Atlantic Ocean or Gulf of Mexico.
Three of the seven landing zones that SpaceX and NASA prescribed for the test mission, called Demo-2, lie within the “cone of probability” for the storm’s path. Those splashdown sites are located off the coasts of Cape Canaveral, Daytona, and Jacksonville, according to NASA. A July 30 map shows NASA and SpaceX’s landing zones for the Crew Dragon Demo-2 mission amid the estimated path and conditions of Tropical Storm Isaias. The outer-edge green shows a 5-10% chance of sustained tropical storm-force winds. Google Earth; NOAA; NASA; Business Insider
Depending on how large the storm grows and how nasty weather conditions become, mission managers may scrub the undocking and landing attempt. Steep waves, rain, lightning, low clouds, poor visibility (for helicopters to fly the astronauts from a SpaceX recovery boat back to land), or even winds stronger than about 10 mph can trigger a “no-go” decision.
At the moment they are go for undocking on August 1st and splashdown the next day, but that could change depending on how the weather changes.
Russia today successfully launched two communications satellites into orbit using its Proton rocket.
This was the first Proton launch in 2020, after Roscosmos discovered in April problems with three rockets that required them to be sent back to their manufacturer.
The leaders in the 2020 launch race:
18 China
11 SpaceX
9 Russia
4 ULA
3 Japan
The U.S. still leads China 19-18 in the national rankings.
Jezero Crater delta
If all goes right, on February 18, 2021 the rover Perseverance will gently settle down onto the floor of Jezero Crater on Mars. The image to the right is probably the most reproduced of this site, as it shows the spectacular delta that some scientists believe might be hardened mud that had once flowed like liquid or lava from the break in the rim to the west.
They hope to put Perseverance down to the southeast of that delta, as shown in the overview map below.
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The Senate gives, the House taketh away: Even as the Democratically-controlled House continues to refuse the Trump administration’s request for $2.6 billion to fund its 2024 manned lunar landing, the Republican-controlled Senate has provided $1.6 billion of those funds in the next COVID-19 stimulus package.
This illustrates why such stimulus packages are utterly corrupt. Much of the money allocated has little to do with helping the country recover from the Wuhan panic, but is instead earmarked for the favorite agencies of the politicians. The Republicans are also trying to use this package to sneak across funding for Artemis without the House Democrats noticing, or being able to object.
It remains to be seen whether that strategy will work. Either way, we continue on the road to bankruptcy and financial collapse, as the federal government is trillions in debt, and simply doesn’t have the money for any of this.
Australian astronomers have found two meteorites on the ground after spotting them in the sky before they fell, with one found only
The first had been spotted in the sky only a few weeks earlier, while the second had been spotted back in November 2019. They had had to postpone the search for the second until the restrictions for the Wuhan flu were lifted.
The discovery of the first was amusing:
Astronomer Dr Hadrien Devillepoix and planetary geologist Dr Anthony Lagain originally went on a reconnaissance mission to assess the latest fall site near Madura, taking drone imagery of the area. Dr Devillepoix said that as they were walking back to their car along the old telegraph track near Madura Cave, they spotted what appeared to be a real meteorite on the ground just in front of them.
“I thought Anthony was playing a prank on me, that he planted one of the fake meteorites we were using for the drone training session. But after a closer inspection, it was evident that the fist-sized, 1.1 kilogram rock we just found was indeed the meteorite we were after,” Dr Devillepoix said. Dr Devillepoix explained that although the rock was very close to the predicted fall position, the team was not expecting to find it that quickly in this bushy terrain.
Based on its track as it fell, the astronomers think it might be from the Aten family of asteroids, which orbit the Sun between Venus and Earth. Such asteroids are hard to find because of the glare of the Sun, and are thus not as well studied. This makes this find even more significant.
Finds like this, which are beginning to happen more and more, are important because, first, the meteorite doesn’t spend much time in the Earth environment, and second, they can precisely identify where the asteroid came from. Both facts allow scientists a much better understanding of the asteroids themselves.
The uncertainty of science: Two different teams of astronomers are now suggesting that, based on evidence recently obtained by the Atacama Large Millimeter/submillimeter Array (ALMA), a neutron star is what is left over from the star that caused Supernova 1987A, the only naked eye supernova in the past four hundred years.
Recently, observations from the ALMA radio telescope provided the first indication of the missing neutron star after the explosion. Extremely high-resolution images revealed a hot “blob” in the dusty core of SN 1987A, which is brighter than its surroundings and matches the suspected location of the neutron star.
..The theoretical study by Page and his team, published today in The Astrophysical Journal, strongly supports the suggestion made by the ALMA team that a neutron star is powering the dust blob. “In spite of the supreme complexity of a supernova explosion and the extreme conditions reigning in the interior of a neutron star, the detection of a warm blob of dust is a confirmation of several predictions,” Page explained.
These predictions were the location and the temperature of the neutron star. According to supernova computer models, the explosion has “kicked away” the neutron star from its birthplace with a speed of hundreds of kilometers per second (tens of times faster than the fastest rocket). The blob is exactly at the place where astronomers think the neutron star would be today. And the temperature of the neutron star, which was predicted to be around 5 million degrees Celsius, provides enough energy to explain the brightness of the blob.
They haven’t actually gotten any direct evidence of this stellar remnant, so some healthy skepticism is required. At the same time, the data favors this solution, which means the star did not collapse into a black hole when it exploded.
ULA’s Atlas-5 rocket this morning successfully launched NASA’s Perseverance rover on its journey to Mars.
The rover is scheduled to arrive on Mars on February 18, 2021, landing in Jezero Crater.
The leaders in the 2020 launch race:
18 China
11 SpaceX
8 Russia
4 ULA
3 Japan
The U.S. now leads China 19-18 in the national rankings.
