Kevin_Hall

Can Sirius go supernova after thousands of years and what would happen? I'm very curious to figure it out. I read Calvin Belk thought on it and he says that What do you think of it?

The "cube" on the far side of Moon had been captured by China’s Yutu 2 Rover. As it was after found out, it was a common moon rock. https://www.popsci.com/science/chinas-rover-mysterious-hut-on-moon/ https://www.space.com/moon-mystery-hut-rabbit-shaped-rock-china-rover

I read that JWST has got enough fuel to last 20 years, but there is another question: it's said that JWST is threatened by being hit by space debris. Does anybody know any details of it? https://www.space.com/james-webb-space-telescope-fuel-20-years

How are future colonialists going to overcome Mars's gravity? Low gravity will definitely affect their bodies. I mean this problem. Beg my pardon for not having fully described my question.

Mars gravity is 3.721 m/s2, which is about 2.65 less than Earth's gravity How could Mars low gravity problem be solved?

The idea is rather old: we put a bunch of Al foil 10 microns thick and reflect the solar flux over the daytime part of the planet. What sea level area will be shaded by 1 km2 of such foil at an altitude of 1000 km? Does it make sense to raise such an umbrella on the Geostationary orbit?

I mean Elon claimed that SpaceX was going to absorb CO2 to create rocket fuel. I thought it was clear. Such solutions do already exist, such as NASA's one https://technology.nasa.gov/patent/TOP2-160 As a matter of fact, such technology has been used by Canadian company Carbon Engineering https://www.nationalgeographic.com/science/article/carbon-engineering-liquid-fuel-carbon-capture-neutral-science By the way, what is your personal opinion on creating rocket fuel using plastic waste, exchemist?

So, you think plastic waste will never become a source for producing rocket fuel, because it will have zero efficiency?

Do you know if JSWT is capable of capturing BH? I know that it's not its main goal, though if it could we would discover much more than we expect.

While Elon is on its way to use CO2 to produce rocket fuel, I've got another question. Is it actually possible to reduce plastic waste into rocket fuel?

How will geomagnetic reversal influence Earth? How is this process going? Thanks for your replies!

Really great number of BHs, that's insane. Imagine that somewhere in parallel universe people are looking at an image with plenty of white holes 😀 How wonderful it would be to have such a telescope to capture a BH..

ISS astronauts recorded a video to wish a Happy New Year https://tass.com/science/1383067 Happy New Year! Wish you good luck and persistence during next year!

Russian scientists have discovered a new mechanism for the formation of formaldehyde in space - a compound that plays a significant role in the synthesis of organic compounds necessary for the origin of life on Earth. According to the new results, organic molecules can appear in molecular clouds in the early stages of evolution, that is, much earlier than the formation of stars in them. Molecules of water carry out the transfer of protons from oxygen atoms to a carbon atom, which catalyzes the formaldehyde synthesis reaction without the need for a large amount of energy. Source: https://pubs.acs.org/doi/10.1021/acs.jpclett.1c02760

Waiting for JWST to tell us 😀. Joke Actually not yet, but there is an interesting arcticle about it in Discover mag https://www.discovermagazine.com/the-sciences/can-life-exist-on-a-rogue-planet