November 2, 2020
It’s possible our galaxy is filled to the brim with these rogue planets, but this one is particularly unusual for one special reason: it is the smallest found to date — even smaller than Earth — with a mass similar to Mars.
https://www.cbsnews.com/news/rogue-planet-exoplanet-floating-through-space-discovery-milky-way/
And the video at the top of the page linked above has NOTHING to do with rogue planets.
Sigh.
October 30, 2020
Even more intriguing, the asteroid’s metal is worth an estimated $10,000 quadrillion (that’s 15 more zeroes), more than the entire economy of Earth.
https://www.usatoday.com/story/news/nation/2020/10/29/metal-asteroid-psyche-nasa-hubble-images/6069223002/
Leave it to USA Today—the paragon of journalistic integrity and unvarnished truth reporting—to grossly exaggerate “value.”
Imagine if someone dumped several hundred thousand tons of nickel and iron on the market?
It would immediately make nickel and iron worthless. Simple supply and demand. So it’s not monetary value that is important.
How do we create vehicles and domiciles for a space-faring future while avoiding the exorbitant cost of getting them into space in the first place? It’s the cost and weight of rocket fuel that’s the issue.
Solution: Build everything in space. No need to bring anything back to Earth.
Not needed now. Maybe someday.
October 26, 2020
The new research is especially topical given that NASA plans to land humans on the Moon in the 2020s and use lunar resources as part of its Artemis program, prompting thorny discussions about legal and ethical extraction of materials on the Moon.
https://www.vice.com/en/article/k7aqpz/nasa-found-a-lot-of-water-on-the-moon-in-breakthrough-for-human-habitation
“Micro cold traps.” The equivalent of a 12-ounce bottle in a cubic meter of soil. But not everywhere, and primarily at the polar caps.
So…how will this help, exactly? 🤔
October 21, 2020
“The spacecraft did everything it was supposed to do.”
https://www.theguardian.com/science/2020/oct/21/nasa-osiris-rex-spacecraft-lands-on-asteroid-bennu-in-mission-to-collect-dust
Um. OK. That’s some confidence in your own project you got there, dude.
Now all we have to do is wait a couple of weeks to find out if it actually grabbed anything!
October 20, 2020
Researchers understand it to be what they call a carbonaceous asteroid, meaning its rocks still retain a lot of the chemistry that was present when the Sun and the planets came into being more than 4.5 billion years ago. Hence the desire to bring some of its material home for analysis in sophisticated Earth laboratories.
https://www.bbc.com/news/science-environment-54592163
If it’s a spinning top, I don’t see how showing it in comparison to the Eiffel Tower will help us understand how big it is…
Then again, usually media compare things like this to a football field (US) or a football pitch (UK). Or they say things like “as long as [insert type of moving vehicle here] end to end.”
Honestly, just say “510 m3” and leave it at that. All we care about is what the probe will do: Vacuum up and bring back at least 60g of materials from the beginning of the solar system.
Now how about THAT, Hayabusa-2?
October 9, 2020
The volcano is about the size of Arizona with a volume 100 times larger than that of Mauna Loa’s, Earth’s largest volcano, NASA says. “In fact, the entire chain of Hawaiian islands (from Kauai to Hawaii) would fit inside Olympus Mons!”
Brighter than Jupiter this October! And the closest Mars will be until 2035.
(The photo is from Forbes, but the information was better on The Telegraph.)
October 3, 2020
“When you look at different parts of the electromagnetic spectrum, that area of space is very different from the blackness we perceive with our eyes,” says Michele Bannister, an astronomer at the University of Canterbury in Christchurch, New Zealand, who studies the outer reaches of the Solar System. “Magnetic fields are fighting and pushing and tied up with each other. The image you should have is like the plunge pool under Niagara Falls.”
August 29, 2020
twitter.com/theplanetaryguy/status/1298728036305719298
Well, now you know. 🤖
August 11, 2020
Astronauts on a trip to Mars would be exposed to very high levels of radiation which can cause serious long-term health problems such as cancer and sterility. Radiation shielding can help, but it is extremely heavy, and the longer the mission, the more shielding is needed. A better way to reduce radiation exposure is to simply get where you are going quicker.
Hmm. So putting them in a ship with a giant nuclear fission reactor is safer?
I think somebody may want to come up with a backup plan…
https://www.space.com/nuclear-powered-rockets-to-explore-solar-system.html
August 2, 2020
The Airbus spacecraft will have to manoeuvre itself into a position to capture these samples that will be packaged inside a football-sized container.
After ingesting this container, the satellite must then prepare it for return to Earth.
This means not only shipping it across hundred of millions of km of space, but also putting the football inside a re-entry capsule that can be dropped into Earth’s atmosphere to land in an American desert.
This would be, indeed, a feat of engineering as well as a first in interplanetary exploration.
But I wouldn’t go so far as to call it an “interplanetary cargo ship.” Unless the intention is to maintain it as a permanent link between research locations (i.e., some kind of permanent orbitor stationed above the Jezero Crater) and research facilities on Earth (or the Moon, or the International Space Station).
Political will is needed in addition to the enormous funding. Semi-privatization, anyone?
https://www.bbc.com/news/science-environment-53575353
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