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  • Asteroid - Wikipedia
    An asteroid is a minor planet —an object larger than a meteoroid that is neither a planet nor an identified comet —that orbits within the inner Solar System or is co-orbital with Jupiter (Trojan asteroids)
  • Asteroids - Science@NASA
    Asteroids, sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar system about 4 6 billion years ago Most asteroids can be found orbiting the Sun between Mars and Jupiter within the main asteroid belt
  • What are asteroids? | Space
    Asteroids are the rocky remnants of material leftover from the formation of the solar system and its planets approximately 4 6 billion years ago The majority of asteroids originate
  • What Is an Asteroid? | NASA Space Place – NASA Science for Kids
    Asteroids are small, rocky objects that orbit the sun Although asteroids orbit the sun like planets, they are much smaller than planets A close-up image of the asteroid Ida taken by NASA's Galileo spacecraft
  • Asteroid | Definition, Size, Facts | Britannica
    asteroid, any of a host of small bodies, about 1,000 km (600 miles) or less in diameter, that orbit the Sun primarily between the orbits of Mars and Jupiter in a nearly flat ring called the asteroid belt It is because of their small size and large numbers relative to the major planets that asteroids are also called minor planets
  • 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
  • Eyes on Asteroids - NASA JPL
    Explore the 3D world of Asteroids, Comets and NEOs Learn about past and future missions, tracking and predicting orbits, and close approaches to Earth
  • Asteroid Fast Facts - NASA
    About once a year, an automobile-sized asteroid hits Earth’s atmosphere, creates an impressive fireball, and burns up before reaching the surface Every 2,000 years or so, a meteoroid the size of a football field hits Earth and causes significant damage to the area
  • James Webb telescope ups the odds that city-killer asteroid 2024 YR4 . . .
    The James Webb Space Telescope has taken another look at the potential "city-killer" asteroid 2024 YR4 and found its chances of hitting the moon in December 2032 have increased to 4 3%
  • Asteroids Facts | Types, Location, How Many?, History Definition
    The most famous asteroids are dwarf planet Ceres, Pallas – a huge 544-kilometre asteroid and Vesta – a very bright large object These are all asteroids but also referred to as minor planets Astronomers have been aware of them since the early 1800s





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