Elon Musk: @NASASpaceflight Sub lightspeed 是星际所需的一切。星际是艰难的。

Posted on 2022-07-28

原推：@NASASpaceflight Sub lightspeed is all that’s needed to be interstellar. Intergalactic is tough.
https://twitter.com/elonmusk/status/1552325766213427202