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  • 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 Birth Stars form in large clouds of gas and dust called molecular clouds
  • Types - NASA Science
    Types of Stars The universe’s stars range in brightness, size, color, and behavior Some types change into others very quickly, while others stay relatively unchanged over trillions of years Main Sequence Stars NASA’s Solar Dynamics Observatory captured this image of our 4 6-billion-year-old Sun, a main sequence star
  • Stars in an Exoplanet World - NASA Science
    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 - NASA Science
    Young stars within a star-forming region interact with each other in complex ways The details of how they evolve and release the heavy elements they produce back into space for recycling into new generations of stars and planets remains to be determined through a combination of observation and theory
  • Multiple Star Systems - NASA Science
    Multiple Star Systems Our solar system, with its eight planets orbiting a solitary Sun, feels familiar because it's where we live But in the galaxy at large, planetary systems like ours are decidedly in the minority More than half of all stars in the sky have one or more partners These multiple star systems come in a stunning variety of flavors: large, hot stars orbited by smaller, cooler
  • Exploring the Birth of Stars - Science@NASA
    Stars form in large clouds of gas and dust called nebulae Hubble’s capability enables study of several aspects of star formation
  • Stars Images - NASA Science
    Stars Images NASA's Neil Gehrels Swift Observatory imaged the extremely luminous afterglow of explosion GRB 080319B using its X-ray Telescope (left) and NASA's Wide-field Infrared Survey Explorer (WISE) mission captured this mosaic of the Heart and Soul nebulae Located about 6,000 light-years
  • NASA Science
    NASA Science seeks to discover the secrets of space, the origins of the universe, search for life elsewhere, and protect and improve life on Earth


















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