They shut it down last September. It’s nsfw spinoff redgifs is still up.

Mercury would be a denser propellant than xenon/other Nobel gasses used for ion thrusters in orbit. There’s been a ton of other insane fuel types proposed over the years which thankfully haven’t been used (although a lot of rockets have and still use toxic hypergolic fuels like hydrazine)

Good vid going over some of these fuels: https://youtu.be/_wLk2j7_KB0

At least for us amateurs satellite trails get completely rejected out during image stacking. They’ll definitely be more of a problem for professional observatories, especially large survey scopes like Vera Rubin

They actually just got rid of the stars, now you just tip people

https://old.reddit.com/r/reddit/comments/16ryhv9/celebrating_great_content_is_as_good_as_gold/

howdy