- Stars - NASA Science
Stars are giant balls of hot gas – mostly hydrogen, with some helium and small amounts of other elements Every star has its own life cycle, ranging from a few million to trillions of years, and its properties change as it ages
- Types - NASA Science
Scientists call a star that is fusing hydrogen to helium in its core a main sequence star Main sequence stars make up around 90% of the universe’s stellar population
- The Lives of Stars - NASA Science
Like ancient explorers who looked to the stars to guide them to new worlds, astronomers today use stars to discover worlds many light years beyond our solar system
- Stars in an Exoplanet World - Science@NASA
Stars are the most basic building blocks of galaxies The age, distribution, and composition of stars trace the history, dynamics, and evolution of their galaxy
- Star Lifecycle - Science@NASA
Groups 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
- Exploring the Birth of Stars - Science@NASA
Stars form in large clouds of gas and dust called nebulae that scatter the visible wavelengths of light our eyes can see Hubble’s capability to see ultraviolet, visible, and near-infrared light enables study of several aspects of star formation
- The Lives, Times, and Deaths of Stars - Science@NASA
All stars are born in clouds of dust and gas like the Pillars of Creation in the Eagle Nebula pictured below In these stellar nurseries, clumps of gas form, pulling in more and more mass as time passes As they grow, these clumps start to spin and heat up
- What Did Hubble See on Your Birthday? - NASA Science
Explore the Night Sky Your backyard telescope or binoculars may not have Hubble's capabilities, but you can still see some of the same celestial objects Hubble has observed Use our star charts to find these objects then compare what you see with the images Hubble has taken
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