Nebulas

Crab Nebula

A nebula is a cloud of gas and dust that is the result of a supergiant star explosion. A nebula is sometimes called a interstellar nursery. New stars are born in nebulas and there is usually a neutron star in the center, like the neutron star in the center of the Crab Nebula, one of the most famous nebulas in the universe. The Crab Nebula is the result of a supernovae explosion that took place during the 1000's. It was as bright as our moon in the night sky for several weeks and the brightest in history. This supernovae was best documented by the ancient Chinese. Nowadays you need a good telescope to See it.