Messier 20 is also known as Trifid Nebula. It can be seen among the constellation Sagittarius. The 300,000 year old nebula is about 40 light-years across. Trifid Nebula is one of the youngest star forming regions, with new stars in its natal dust and gas clouds. Above and to the right, Messier 21, a cluster of stars, can be seen. Messier 21's stars are about 8 million years old. Messier 20 and 21 don't actually share a connection. The Trifid Nebula is truly beautiful with its array of colors. It's kind of crazy to think that 300,000 years is considered young. It really puts into perspective how short our own human lives are.
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