(Description) Figure 2 The Crab nebula – This was the first object in Messier’s catalogue and is designated M1. The nebula is the remains of a supernova (an exploding star) that was recorded by Chinese astronomers in the year 1054.

Week 4: Imaging Messier objects with COAST

The Crab nebula – This was the first object in Messier’s catalogue and is designated M1. The nebula is the remains of a supernova (an exploding star) that was recorded by Chinese astronomers in the year 1054. [ Image from NASA ]