EMA Director Jack Wallach
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An asteroid is a minor planet—an object that is neither a true planet nor an identified comet— that orbits within the inner Solar System. They are rocky, metallic, or icy bodies with no atmosphere.
Jul 9, 2024 · Learn about asteroids, small, rocky objects that orbit the sun and are leftovers from the formation of our solar system. Find out how scientists study asteroids and what they can tell us about the history of planets and the sun.
Learn about asteroids, the rocky leftovers from the early solar system, and their orbits, sizes, and missions. Explore the 3D world of asteroids, comets and near-Earth objects with NASA resources and stories.
Jul 5, 2024 · Learn about asteroids, small bodies that orbit the Sun between Mars and Jupiter. Find out how they were discovered, named, and studied over time.
Jul 28, 2023 · 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 from the...
Explore the 3D world of Asteroids, Comets and NEOs. Learn about past and future missions, tracking and predicting orbits, and close approaches to Earth.
Learn about the small bodies of rock, ice, and metal that survived the formation of our solar system. Find out how NASA explores, tracks, and defends against asteroids, comets, and meteors.
