My favorite astronomical object (outside of earth-moon-sun) is the Pleiades.
What's yours?
@literorrery @starkatt also swans.
@starkatt @literorrery also also swan TF.
@literorrery death ray IRL edition.
@acetone_kitten ... love
I just.
never stop <3
@starkatt Cygnus X-1. All astrology references aside, the binary connection between it and HDE 226868, and the X-Ray density it's emitting, was our first conclusive evidence of black holes. Much like Percival Lowell and Pluto, but further out in space and about things we still can't even really understand.