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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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The Long and Storied Path to Human Asteroid Exploration
The Long and Storied Path to Human Asteroid Exploration
Within NASA's new FY2014 budget proposal lies a project known as the Asteroid Retrieval and Utilization Mission.Read More...
NASA's Asteroid Initiative Benefits From Rich History
NASA's Asteroid Initiative Benefits From Rich History
NASA's FY2014 budget proposal includes a plan to robotically capture a small near-Earth asteroid and redirect it safely to a stable orbit in the Earth-moon system where astronauts can visit and explore it.Read More...
What Exploded over Russia?
What Exploded over Russia?
"It was a meteor strike--the most powerful since the Tunguska event of 1908," says Bill Cooke of NASA's Meteoroid Environment Office.Read More...
One Close Fly-by: DA14 - What We Learn from NEOs
One Close Fly-by: DA14 - What We Learn from NEOs
On February 15, 2013, asteroid 2012 DA14, a 50-meter stony asteroid, will pass the Earth at a distance of about 27,680 kilometers (17,200 miles).Read More...
Possible Seismic Activity on Asteroid 2012 DA14
Possible Seismic Activity on Asteroid 2012 DA14
For eons, Earth has felt the tremors of asteroids striking our planet. From the extinction of the dinosaurs 65 million years ago to the felled forests around Tunguska in 1908, the space rocks keep coming. This week, Earth strikes back.Read More...
Asteroid DA14 Flyby Toolkit
Asteroid DA14 Flyby Toolkit
Everything you need to know about Friday's historic asteroid flyby.Read More...
50 Years of Robotic Planetary Exploration: Julie Castillo-Rogez, Planetary Geophysicist at the Jet Propulsion Laboratory (JPL)
50 Years of Robotic Planetary Exploration: Julie Castillo-Rogez, Planetary Geophysicist at the Jet Propulsion Laboratory (JPL)
We asked them and here is what the experts had to say about the last 50 years of planetary robotic exploration.Read More...
State of the Solar System
State of the Solar System
As the president prepares to give his annual State of the Union Address, we offer our own update from the ongoing exploration of our cosmic neighborhood.Read More...
Asteroid 2012 DA14 - Earth Flyby Reality Check
Asteroid 2012 DA14 - Earth Flyby Reality Check
Small near-Earth asteroid 2012 DA14 will pass very close to Earth on February 15, so close that it will pass inside the ring of geosynchronous weather and communications satellites.Read More...
Record Setting Asteroid Flyby
Record Setting Asteroid Flyby
On Feb. 15th an asteroid about half the size of a football field will fly past Earth closer than many man-made satellites. Since regular sky surveys began in the 1990s, astronomers have never seen an object so big come so close to our planet.Read More...
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Previous
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The Long and Storied Path to Human Asteroid Exploration
The Long and Storied Path to Human Asteroid Exploration
Within NASA's new FY2014 budget proposal lies a project known as the Asteroid Retrieval and Utilization Mission.Read More...
NASA's Asteroid Initiative Benefits From Rich History
NASA's Asteroid Initiative Benefits From Rich History
NASA's FY2014 budget proposal includes a plan to robotically capture a small near-Earth asteroid and redirect it safely to a stable orbit in the Earth-moon system where astronauts can visit and explore it.Read More...
What Exploded over Russia?
What Exploded over Russia?
"It was a meteor strike--the most powerful since the Tunguska event of 1908," says Bill Cooke of NASA's Meteoroid Environment Office.Read More...
One Close Fly-by: DA14 - What We Learn from NEOs
One Close Fly-by: DA14 - What We Learn from NEOs
On February 15, 2013, asteroid 2012 DA14, a 50-meter stony asteroid, will pass the Earth at a distance of about 27,680 kilometers (17,200 miles).Read More...
Possible Seismic Activity on Asteroid 2012 DA14
Possible Seismic Activity on Asteroid 2012 DA14
For eons, Earth has felt the tremors of asteroids striking our planet. From the extinction of the dinosaurs 65 million years ago to the felled forests around Tunguska in 1908, the space rocks keep coming. This week, Earth strikes back.Read More...
Asteroid DA14 Flyby Toolkit
Asteroid DA14 Flyby Toolkit
Everything you need to know about Friday's historic asteroid flyby.Read More...
50 Years of Robotic Planetary Exploration: Julie Castillo-Rogez, Planetary Geophysicist at the Jet Propulsion Laboratory (JPL)
50 Years of Robotic Planetary Exploration: Julie Castillo-Rogez, Planetary Geophysicist at the Jet Propulsion Laboratory (JPL)
We asked them and here is what the experts had to say about the last 50 years of planetary robotic exploration.Read More...
State of the Solar System
State of the Solar System
As the president prepares to give his annual State of the Union Address, we offer our own update from the ongoing exploration of our cosmic neighborhood.Read More...
Asteroid 2012 DA14 - Earth Flyby Reality Check
Asteroid 2012 DA14 - Earth Flyby Reality Check
Small near-Earth asteroid 2012 DA14 will pass very close to Earth on February 15, so close that it will pass inside the ring of geosynchronous weather and communications satellites.Read More...
Record Setting Asteroid Flyby
Record Setting Asteroid Flyby
On Feb. 15th an asteroid about half the size of a football field will fly past Earth closer than many man-made satellites. Since regular sky surveys began in the 1990s, astronomers have never seen an object so big come so close to our planet.Read More...
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