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  • 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
  • RPS 3D Viewer - 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
  • In Depth | 2P Encke – NASA Solar System Exploration
    The Taurids, which peak in October November of each year, are fast meteors (65,000 mph or 104,607 kph) and are known for their fireballs Fireballs are meteors that are as bright or brighter than the planet Venus (seen in the morning or evening skies at around a visual magnitude of -4)
  • In Depth | Asteroids - NASA Solar System Exploration
    Asteroids, Comets Meteors In Depth Introduction 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:
  • Solar System Exploration
    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
  • In Depth | C 1995 O1 (Hale-Bopp) - NASA Solar System Exploration
    Asteroids, Comets Meteors C 1995 O1 (Hale-Bopp) Comet Hale-Bopp (C 1995 O1) was discovered on 23 July 1995 by two independent observers, Alan Hale (Cloudcroft, N M ) and Thomas Bopp (Stanfield, AZ), and is showing potential of putting on a spectacular display as it nears its 1997 perihelion
  • In Depth | Our Solar System - NASA Solar System Exploration
    Introduction The planetary system we call home is located in an outer spiral arm of the Milky Way galaxy Our solar system consists of our star, the Sun, and everything bound to it by gravity – the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune; dwarf planets such as Pluto; dozens of moons; and millions of asteroids, comets, and meteoroids
  • In Depth | 21P Giacobini-Zinner - NASA Solar System Exploration
    Most years the shower is weak, and many times very few meteors are seen However, there are also Draconid meteor storms (sometimes called Giacobinid meterors) on record A meteor storm is observed when one thousand or more meteors are seen per hour at the location of the observer
  • In Depth | Proteus – NASA Solar System Exploration
    This image of Neptune's irregularly-shaped satellite Proteus (1989 N1) taken by Voyager 2 shows a resolution of 8 km (5 miles) per pixel It was taken at a range of 870,000 km (540,000 miles)
  • In Depth | C 2012 S1 (ISON) – NASA Solar System Exploration
    Comet ISON appears as a white smear heading up and away from the sun ISON was not visible during its closest approach to the sun, so many scientists thought it had disintegrated, but images like this one from the ESA NASA Solar and Heliospheric Observatory suggest that a small nucleus may still be intact





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