Only a few near-Earth objects would fit NASA's proposed guidelines for a manned mission to an asteroid.
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New Image of Asteroid 2005 YU55
This radar image of asteroid 2005 YU55 was obtained on Nov. 7, 2011, at 11:45 a.m. PST (2:45 p.m. EST/1945 UTC), when the space rock was at 3.6 lunar distances,…Read More »
which is about 860,000 miles, or 1.38 million kilometers, from Earth. Less «
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Asteroid Jiggles Like a Jar of Mixed Nuts
Credit: Univ Tokyo/JAXA
Image of the near-Earth asteroid Itokawa. The boulder-free areas appear relatively smooth and are filled with small, uniformly sized particles.
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Peek at Huge Asteroid Provides More Questions Than Answers
The European Space Agency's Rosetta spacecraft took this image of the asteroid Lutetia during a flyby on July 10, 2010.
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See You Soon, Apophis Asteroid
The asteroid Apophis was discovered on June 19, 2004. It will fly within 18,300 miles of Earth on April 13, 2029, but poses little risk of impact.
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Possible Asteroid Particles Found in Returned Space Probe
Scientists have found small particles inside the sample container of the Japanese asteroid probe Hayabusa, though it remains to be seen if they are asteroid…Read More »
bits or contamination from Earth. Here, particles are visible in re-entry capsule's sample container in a photo taken through the window of JAXA's sealed curation facility on June 28, 2010. Full Story. Less «
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Mysterious Asteroid Unmasked By Space Probe Flyby
This photo of the asteroid Lutetia is one of the closest views ever of the asteroid. It was taken from a distance of about 80,000 km during a July 10,…Read More »
A radar image of the triple asteroid system 2001 SN263.
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First Images of Approaching Asteroid
These low-resolution radar images of asteroid 2007 TU24 were taken over a few hours by the Goldstone Solar System Radar Telescope in California's Mojave…Read More »
Desert. Image resolution is about 20-meters per pixel. Less «
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Potentially Dangerous Space Rock Lost, and Found
Credit: SETI Institute
Minor planet 6344 P-L (=2007 RR9) among the stars on October 3, 2007. This is currently still a faint object, recorded in 3-minute exposures tracked on…Read More »
the target object by Paulo Holvorcem of Brazil, remotely using the 0.35-m telescope at Tenagra Observatory in Western Australia (at Shenton Park, near Perth) operated by Paul Luckas. Less «
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Japanese Craft Takes Close-up Photos of Asteroid
Scientists made this colorized image of the near-Earth asteroid Itokawa by combinging images taken in various wavelengths by Japan's Hayabusa spacecraft.
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Japanese Space Probe Reaches Asteroid
Hayabusa's view of asteroid Itokawa. The Japanese space probe has closed in on the object. Future objective of the spacecraft is to sample the asteroid…Read More »
and then return those specimens back to Earth. Less «
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Largest Asteroid Might Contain More Fresh Water than Earth
Credit: NASA, ESA, J. Parker (Southwest Research Institute), P. Thomas (Cornell University), and L. McFadden (University of Maryland, College Park)
Snapshots of the asteroid 1 Ceres taken by the Hubble Space Telescope provide clues about the asteroid's interior make-up. The bright spot that appears in each image is a mystery.
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Japan's Hayabusa space probe has drawn closer to its celestial target: asteroid Itokawa. The spacecraft is being prepared for touchdown this month on the…Read More »
space rock, picking up specimens for return to Earth, and deploying a small lander that can hop from Less «
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Huge Tunguska Explosion, Still Mysterious
The Tunguska explosion flattened some 500,000 acres of Siberian forest on June 30, 1908. This image is from the Leonid Kulik expedition in 1927.
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Asteroid Cruises Past Earth ... With a Partner!
Credit: NASA/JPL/Arecibo Observatory
The asteroid 2008 BT18 is revealed to be a pair in this July 7 radar image. The larger object at top is thought to be spheroidal in shape. The shape of…Read More »
the smaller object (bright dot near bottom) is not known. Less «
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Potentially Dangerous Asteroid Spotted Passing Earth
Credit: Arecibo Observatory/Michael Nolan
The near-Earth asteroid 2005 YU55 — on the list of potentially dangerous asteroids — was observed with the Arecibo Telescope's planetary radar on April…Read More »
19, 2010, when it was about 1.5 million miles from Earth. Less «
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Water Ice Discovered on Asteroid for First Time
Credit: Gabriel Pérez, Servicio MultiMedia, Instituto de Astrofisica de Canarias, Tenerife, Spain
An illustration of the asteroid 24 Themis along with two small fragments that orbit with it. One of the small fragments is inert (as most asteroids are)…Read More »
and the other has a comet-like tail, produced by the sublimation of water ice from its surface. Scientists announced the first discovery of water ice on 24 Themis. Full Story. Less «
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NASA Sky-Mapping Spacecraft Spots First New Asteroid
The red dot at the center of this image is the first near-Earth asteroid discovered by NASA's Wide-Field Infrared Survey Explorer, or WISE. The asteroid…Read More »
appears redder than the rest of the background stars because it is cooler and emits most of its light at longer infrared wavelengths. In visible light, this space rock is very faint and difficult to see. Less «
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Weird Object Zooming by Earth Wednesday is Likely an Asteroid