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Bookmark or Share- Stars - NASA ScienceAstronomers estimate that the universe could contain up to one septillion stars – that’s a one followed by 24 zeros. Our Milky Way alone contains more than 100 billion, including our most well-studied star, the Sun. Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements.
- Star Lifecycle - Science@NASAGroups of stars make up galaxies, while planets and ultimately life arise around stars. Although stars have been the main topic of astronomy for thousands of years, we have begun to understand them in detail only in recent times through the advent of powerful telescopes and computers.
- Stars Images - Science@NASAThe star-forming nebula W51 is one of the largest "star factories" in the Milky Way galaxy. Interstellar dust blocks the... The ring-shaped clouds around the nebula RCW 120 were detected by NASA's Spitzer Space Telescope in this composite image.
- Multiple Star Systems - Science@NASAThese multiple star systems come in a stunning variety of flavors: large, hot stars orbited by smaller, cooler ones; double stars orbited by planets; pairs pulsing with X-rays as one sheds material that is devoured by the other; systems with as many as seven stars in a complex gravitational dance.
- Hubble Skymap - NASA ScienceThe Hubble Skymap puts the night sky at your fingertips any time of day. Roam the Milky Way to find a selection of galaxies, stars, nebulae and more, and click for a Hubble's-eye-view of each object.
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