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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
  • Star Types - Science@NASA
    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 They range in luminosity, color, and size – from a tenth to 200 times the Sun’s mass – and live for millions to billions of years
  • The Lives, Times, and Deaths of Stars - NASA Science
    These and planetary nebulae from low-mass stars are the sources of many of the elements we find on Earth Their dust and gas will one day become a part of other stars, starting the whole process over again That’s a very brief summary of the lives, times, and deaths of stars
  • Exploring the Birth of Stars - NASA Science
    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
  • 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
  • Hubble Snapshot Captures Life Cycle of Stars - Science@NASA
    This picture nicely illustrates the entire stellar life cycle of stars, starting with the Bok globules and giant gaseous pillars (evidence of embryonic stars), followed by circumstellar disks around young stars, and progressing to aging, massive stars in a young starburst cluster
  • Multiple Star Systems - Science@NASA
    These 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
  • Other Stars, - Science@NASA
    As we look around the galaxy, how different is our solar system from other systems in the Milky Way? How much are we alike? This five-part series looks at some of our intriguing galactic neighbors — these other worlds, and the stars that they orbit
  • New Visualization From NASA’s Webb Telescope Explores Cosmic Cliffs
    This glittering realm of star birth is the subject of a new 3D visualization derived from the Webb data The visualization, created by NASA’s Universe of Learning and titled “Exploring the Cosmic Cliffs in 3D,” breathes new life into an iconic Webb image
  • Solar System Exploration - Science@NASA
    The solar system has one star, eight planets, five dwarf planets, at least 290 moons, more than 1 3 million asteroids, and about 3,900 comets





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