This colorful nebula, known as NGC 604, is one of the largest areas star birth in the nearby Triangulum Galaxy (M33). It is similar to other star-birth regions in our Milky Way galaxy, such as the Orion Nebula. This enormous star-birth region contains more than 200 brilliant blue stars within a cloud of glowing gases some 1,300 light-years across, nearly 100 times the size of the Orion Nebula. The bright stars in NGC 604 are extremely young by astronomical standards, having formed a only 3 million years ago. This nebula is located 2.7 million light-years from Earth in the Triangulum constellation.