RCW 36 Posted on 12 December, 2019 by wjjhoge Reply RCW 36 (aka Gum 20) is an emission nebula containing an open cluster in the constellation Vela. It is one of the most massive-star formation near to our Solar System, only sbout 2300 light-years away. Image Credit: ESO
RCW 36 (aka Gum 20) is an emission nebula containing an open cluster in the constellation Vela. It is one of the most massive-star formation near to our Solar System, only sbout 2300 light-years away.