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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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It's Complicated: Dawn Spurs Rewrite of Vesta's Story
It's Complicated: Dawn Spurs Rewrite of Vesta's Story
Just when scientists thought they had a tidy theory for how the giant asteroid Vesta formed, a new paper from NASA's Dawn mission suggests the history is more complicated.Read More...
Dawn Reality-Checks Telescope Studies of Asteroids
Dawn Reality-Checks Telescope Studies of Asteroids
In a paper, Vishnu Reddy and other members of Dawn's framing camera team describe how up-close observations of Vesta have confirmed and provided new insights into more than 200 years of Earth-based observations.Read More...
Off the Earth, for the Earth
Off the Earth, for the Earth
Space exploration has always created benefits for humankind -- from new technologies and discoveries, to deepening international relationships and inspiring young people to pursue careers in science, technology, engineering and math.Read More...
New Imagery of Asteroid Mission
New Imagery of Asteroid Mission
NASA released Aug. 22 new photos and video animations depicting the agency's planned mission to find, capture, redirect, and study a near-Earth asteroid.Read More...
Target Asteroid Tracked by European Teams
Target Asteroid Tracked by European Teams
In a recent close-ish flyby, asteroid 2002 GT was studied in detail for the first time by a network of European astronomers.Read More...
Ten Thousandth Near-Earth Object Discovered
Ten Thousandth Near-Earth Object Discovered
More than 10,000 asteroids and comets that can pass near Earth have now been discovered. The 10,000th near-Earth object, asteroid 2013 MZ5, was first detected on the night of June 18, 2013, by the Pan-STARRS-1 telescope.Read More...
Noctilucent Clouds, Comets, and Meteor Showers
Noctilucent Clouds, Comets, and Meteor Showers
This summer northern skywatchers may be able to see Noctilucent or "Night Shining" Clouds. Also called PMCs (Polar Mesospheric Clouds), these apparitions are a bit of a puzzle for scientists because it is not entirely clear how they form.Read More...
Approaching Asteroid Has Its Own Moon
Approaching Asteroid Has Its Own Moon
Approaching asteroid 1998 QE2 has a moon.Read More...
Radar Imaging of Near Earth Asteroids
Radar Imaging of Near Earth Asteroids
Radar is a very powerful astronomical technique for studying the physical properties and refining the orbits of near-Earth asteroids.Read More...
Regenerative Fuel Cells, Energy Storage Systems for Space Applications
Regenerative Fuel Cells, Energy Storage Systems for Space Applications
This talk provides an introduction to fuel cells and regenerative fuel cell systems. It also highlights the features of this technology for enabling future NASA missions to the moon, near-Earth asteroids and Mars.Read More...
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Previous
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It's Complicated: Dawn Spurs Rewrite of Vesta's Story
It's Complicated: Dawn Spurs Rewrite of Vesta's Story
Just when scientists thought they had a tidy theory for how the giant asteroid Vesta formed, a new paper from NASA's Dawn mission suggests the history is more complicated.Read More...
Dawn Reality-Checks Telescope Studies of Asteroids
Dawn Reality-Checks Telescope Studies of Asteroids
In a paper, Vishnu Reddy and other members of Dawn's framing camera team describe how up-close observations of Vesta have confirmed and provided new insights into more than 200 years of Earth-based observations.Read More...
Off the Earth, for the Earth
Off the Earth, for the Earth
Space exploration has always created benefits for humankind -- from new technologies and discoveries, to deepening international relationships and inspiring young people to pursue careers in science, technology, engineering and math.Read More...
New Imagery of Asteroid Mission
New Imagery of Asteroid Mission
NASA released Aug. 22 new photos and video animations depicting the agency's planned mission to find, capture, redirect, and study a near-Earth asteroid.Read More...
Target Asteroid Tracked by European Teams
Target Asteroid Tracked by European Teams
In a recent close-ish flyby, asteroid 2002 GT was studied in detail for the first time by a network of European astronomers.Read More...
Ten Thousandth Near-Earth Object Discovered
Ten Thousandth Near-Earth Object Discovered
More than 10,000 asteroids and comets that can pass near Earth have now been discovered. The 10,000th near-Earth object, asteroid 2013 MZ5, was first detected on the night of June 18, 2013, by the Pan-STARRS-1 telescope.Read More...
Noctilucent Clouds, Comets, and Meteor Showers
Noctilucent Clouds, Comets, and Meteor Showers
This summer northern skywatchers may be able to see Noctilucent or "Night Shining" Clouds. Also called PMCs (Polar Mesospheric Clouds), these apparitions are a bit of a puzzle for scientists because it is not entirely clear how they form.Read More...
Approaching Asteroid Has Its Own Moon
Approaching Asteroid Has Its Own Moon
Approaching asteroid 1998 QE2 has a moon.Read More...
Radar Imaging of Near Earth Asteroids
Radar Imaging of Near Earth Asteroids
Radar is a very powerful astronomical technique for studying the physical properties and refining the orbits of near-Earth asteroids.Read More...
Regenerative Fuel Cells, Energy Storage Systems for Space Applications
Regenerative Fuel Cells, Energy Storage Systems for Space Applications
This talk provides an introduction to fuel cells and regenerative fuel cell systems. It also highlights the features of this technology for enabling future NASA missions to the moon, near-Earth asteroids and Mars.Read More...
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