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Ancient Space Rubble
Asteroids are rocky fragments left over from the formation our the solar system about 4.6 billion years ago. Most of these chunks of space rubble, sometimes called minor planets, can be found orbiting the Sun in a belt between the orbits of Mars and Jupiter. The Asteroid Belt or Main Belt probably contains millions of asteroids.

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Just the Facts
Just the Facts
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Dig Deeper
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Create Your Report
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Even More Stuff...
Even More Stuff...
  Explore Asteroids in 3D Videos Activities

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Dr. Jim Green Discusses NEOs
Dr. Jim Green Discusses NEOs
Animation: Asteroid Retrieval Initiative
Animation: Asteroid Retrieval Initiative
ScienceCasts: What Exploded Over Russia?
ScienceCasts: What Exploded Over Russia?
Early Radar Observations of Asteroid 2012 DA14
Early Radar Observations of Asteroid 2012 DA14
ScienceCast: Record-Setting Asteroid Flyby
ScienceCast: Record-Setting Asteroid Flyby
OSIRIS-REx Targets NEO
OSIRIS-REx Targets NEO
NASA Radar Images Asteroid Toutatis
NASA Radar Images Asteroid Toutatis
WISE Finds Fewer Asteroids near Earth
WISE Finds Fewer Asteroids near Earth
Hydrogen Hot Spots on Vesta
Hydrogen Hot Spots on Vesta
Dark Hill on Asteroid Vesta
Dark Hill on Asteroid Vesta
Dawn Spacecraft's Farewell Portrait of Giant Asteroid Vesta
Dawn Spacecraft's Farewell Portrait of Giant...
Vesta's Coat of Many Colors
Vesta's Coat of Many Colors
Dawn's Greatest Hits at Vesta
Dawn's Greatest Hits at Vesta
Touring Vesta's Craters
Touring Vesta's Craters
Dawn's Virtual Flight over Vesta
Dawn's Virtual Flight over Vesta
Updated Radar Movie of Asteroid 2005 YU55
Updated Radar Movie of Asteroid 2005 YU55
Previous
Previous
    1     2    
Next
Previous
Previous
    1     2    
Next
Dr. Jim Green Discusses NEOs
Dr. Jim Green Discusses NEOs
Animation: Asteroid Retrieval Initiative
Animation: Asteroid Retrieval Initiative
ScienceCasts: What Exploded Over Russia?
ScienceCasts: What Exploded Over Russia?
Early Radar Observations of Asteroid 2012 DA14
Early Radar Observations of Asteroid 2012 DA14
ScienceCast: Record-Setting Asteroid Flyby
ScienceCast: Record-Setting Asteroid Flyby
OSIRIS-REx Targets NEO
OSIRIS-REx Targets NEO
NASA Radar Images Asteroid Toutatis
NASA Radar Images Asteroid Toutatis
WISE Finds Fewer Asteroids near Earth
WISE Finds Fewer Asteroids near Earth
Hydrogen Hot Spots on Vesta
Hydrogen Hot Spots on Vesta
Dark Hill on Asteroid Vesta
Dark Hill on Asteroid Vesta
Dawn Spacecraft's Farewell Portrait of Giant Asteroid Vesta
Dawn Spacecraft's Farewell Portrait of Giant...
Vesta's Coat of Many Colors
Vesta's Coat of Many Colors
Dawn's Greatest Hits at Vesta
Dawn's Greatest Hits at Vesta
Touring Vesta's Craters
Touring Vesta's Craters
Dawn's Virtual Flight over Vesta
Dawn's Virtual Flight over Vesta
Updated Radar Movie of Asteroid 2005 YU55
Updated Radar Movie of Asteroid 2005 YU55
Previous
Previous
    1     2    
Next