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  • In Depth | Asteroids - NASA Solar System Exploration
    Asteroids, sometimes called minor planets, are rocky remnants left over from the early formation of our solar system about 4 6 billion years ago The current known asteroid count is: Most of this ancient space rubble can be found orbiting our Sun between Mars and Jupiter within the main asteroid belt
  • Asteroids, Comets Meteors - NASA Solar System Exploration
    Our solar system’s small bodies – asteroids, comets, and meteors – pack big surprises These chunks of rock, ice, and metal are leftovers from the formation of our solar system 4 6 billion years ago
  • In Depth | Perseids – NASA Solar System Exploration
    Meteors come from leftover comet particles and bits from broken asteroids When comets come around the Sun, they leave a dusty trail behind them Every year Earth passes through these debris trails, which allows the bits to collide with our atmosphere and disintegrate to create fiery and colorful streaks in the sky
  • Planet Compare - NASA Solar System Exploration
    NASA’s real-time science encyclopedia of deep space exploration Our scientists and far-ranging robots explore the wild frontiers of our solar system
  • Solar System Exploration Stories - NASA Science
    NASA is launching rockets from a remote Pacific island to study mysterious, high-altitude cloud-like structures that can disrupt critical communication systems
  • The Trojan Asteroids: Keys to Many Locks - NASA Solar System Exploration
    The Trojan asteroids of Jupiter lie at the crux of several of the most interesting outstanding issues regarding the formation and evolution of the Solar System We present science questions centering on the Trojans are lay out recommendations for their future study and exploration
  • In Depth | Oumuamua – NASA Solar System Exploration
    The first known interstellar object to visit our solar system, 1I 2017 U1 ‘Oumuamua, was discovered Oct 19, 2017 by the University of Hawaii’s Pan-STARRS1 telescope, funded by NASA’s Near-Earth Object Observations (NEOO) Program, which finds and tracks asteroids and comets in Earth’s neighborhood While originally classified as a comet
  • In Depth | 1P Halley – NASA Solar System Exploration
    Asteroids, Comets Meteors 1P Halley In 1986, the European spacecraft Giotto became one of the first spacecraft ever to encounter and photograph the nucleus of a comet, passing and imaging Halley's nucleus as it receded from the Sun Credit: Halley Multicolor Camera Team, Giotto Project, ESA | More about this image
  • In Depth | Kuiper Belt – NASA Solar System Exploration
    Researchers have found that some near-Earth asteroids are actually burned-out comets, and most of them would have started out in the Kuiper Belt Many comets crash into the Sun or the planets Those that have close encounters with Jupiter tend to be ripped apart or tossed out of the solar system entirely
  • Solar System Exploration
    Our solar system includes the Sun, eight planets, five officially named dwarf planets, hundreds of moons, and thousands of asteroids and comets Our solar system is located in the Milky Way, a barred spiral galaxy with two major arms, and two minor arms





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