humanoidhistory:Behold the Ring Nebula, aka M57 or NGC 6720, a planetary nebula that lies about 4,00
Behold the Ring Nebula, aka M57 or NGC 6720, a planetary nebula that lies about 4,000 light years away, observed by the Hubble Space Telescope in 1998.
Sat, 26 Nov 2016 23:24:12
