Mar 13, 2026 · How do stars form in a nebula? Nebulae are made of dust and gases—mostly hydrogen and helium. The dust and gases in a nebula are very spread out, but gravity can slowly begin to pull …

Mar 13, 2026 · A supernova of a star more than about 10 times the size of our sun may leave behind the densest objects in the universe— black holes. The Crab Nebula is the leftover, or remnant, of a …

Mar 13, 2026 · Stars What Is a Satellite Galaxy? explore What Is a Supernova? explore What Are Constellations? explore How Does Our Sun Compare With... explore What Is a Nebula? Glossary for …

Mar 13, 2026 · Learn more about what these groups of stars can (and can’t) tell us about our place in the universe. Check out these nine unearthly nightmares that could be happening right now in our …

Mar 13, 2026 · Because the constellations are in a fixed location, they are often used as landmarks in the sky. Many stars, nebulae, and other objects are named after the constellations they are found in. …

Mar 13, 2026 · When you look up at stars in the night sky, you’re seeing other stars in the Milky Way. If it’s really dark, far away from lights from cities and houses, you can even see the dusty bands of the …

Mar 13, 2026 · Stars exploding? Who would do such a thing? Join Detective Eagle Quark on his investigation of this mystery in this Space Forensics interactive game. This link takes you away from …

Mar 13, 2026 · Star: A ball of shining gas, made mostly of hydrogen and helium, held together by its own gravity. Turning hydrogen into helium creates the energy that makes stars shine.

Aug 29, 2022 · This cloud was part of a bigger cloud called a nebula. At some point, the cloud collapsed—possibly because the shockwave of a nearby exploding star caused it to compress.

Rapidly growing embryonic stars are revealed for the first time in this stunning infrared image of the famous Trifid Nebula taken by NASA's Spitzer Space Telescope.