I love Albert Brooks (@AlbertBrooks). Not a super-proflific tweeter (which is fine with me, since I sometimes can’t keep up with the ones who are), but each tweet is worth the wait.
Norman Reedus, Steven Yeun, The Walking Dead AMC, AMC Talking Dead …
That’s all I have tracked down so far.
Neil deGrasse Tyson is both informative and hilarious.
Rob Delaney, of course, is the King of Twitter.
^^^ To me, Blake Shelton is the king of Twitter. 
God bless you and him always!!! 
Holly
I don’t think NASA has anything to do with this. I think it’s not even American, I believe it’s a Canadian comic. But it is worth following.