News tagged with asteroid
Research suggests more silicon in Earth's lower mantle than thought
For many years geophysicists have argued over the perplexing mystery regarding the amount of silicon in the Earth's mantle that is thought to have arrived there via impacts with asteroids.
Space & Earth / Earth Sciences
May 04, 2012 |
3.6 / 5 (8) |
5
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Tiny 'spherules' reveal details about Earth's asteroid impacts
(Phys.org) -- Researchers are learning details about asteroid impacts going back to the Earth's early history by using a new method for extracting precise information from tiny "spherules" embedded in layers ...
Space & Earth / Earth Sciences
Apr 25, 2012 |
5 / 5 (1) |
1
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Splatters of molten rock signal period of intense asteroid impacts on Earth
New research reveals that the Archean era — a formative time for early life from 3.8 billion years ago to 2.5 billion years ago — experienced far more major asteroid impacts than had been previously ...
Space & Earth / Space Exploration
Apr 25, 2012 |
4.6 / 5 (7) |
2
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Samples returned from asteroid Itokawa reveal history of violent impacts
(PhysOrg.com) -- In June of 2010, Japanese researchers launched a probe called Hayabusa into space on a mission to study the asteroid Itokawa (25143). It managed to collect dust specimens from the asteroid’s ...
Space & Earth / Space Exploration
Feb 28, 2012 |
4.3 / 5 (7) |
8
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Rice lab mimics Jupiter's Trojan asteroids inside a single atom
Rice University physicists have gone to extremes to prove that Isaac Newton's classical laws of motion can apply in the atomic world: They've built an accurate model of part of the solar system inside a single ...
Jan 24, 2012 |
4.5 / 5 (13) |
6
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First comet found with ocean-like water: New clues to creation of Earth's oceans
(PhysOrg.com) -- New evidence supports the theory that comets delivered a significant portion of Earth's oceans, which scientists believe formed about 8 million years after the planet itself.
Space & Earth / Space Exploration
Oct 05, 2011 |
4.8 / 5 (18) |
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WISE mission finds fewer asteroids near Earth
(PhysOrg.com) -- New observations by NASA's Wide-field Infrared Survey Explorer, or WISE, show there are significantly fewer near-Earth asteroids in the mid-size range than previously thought. The findings ...
Space & Earth / Space Exploration
Sep 29, 2011 |
4.6 / 5 (5) |
6
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Origin of dinosaur-killing asteroid remains a mystery
(PhysOrg.com) -- Observations from NASA's Wide-field Infrared Survey Explorer (WISE) mission indicate the family of asteroids some believed was responsible for the demise of the dinosaurs is not likely the ...
Space & Earth / Space Exploration
Sep 20, 2011 |
4.9 / 5 (9) |
23
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Meteorite holds clues to organic chemistry of the early Earth: study
(PhysOrg.com) -- Carbonaceous chondrites are a type of organic-rich meteorite that contain samples of the materials that took part in the creation of our planets nearly 4.6 billion years ago, including materials ...
Space & Earth / Space Exploration
Jun 09, 2011 |
4.7 / 5 (6) |
1
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New solar system formation models indicate that Jupiter's foray robbed Mars of mass
(PhysOrg.com) -- Planetary scientists have long wondered why Mars is only about half the size and one-tenth the mass of Earth. As next-door neighbors in the inner solar system, probably formed about the same ...
Jun 05, 2011 |
4.4 / 5 (10) |
5
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Dawn probe reaches milestone approaching asteroid Vesta
(PhysOrg.com) -- NASA's Dawn spacecraft has reached its official approach phase to the asteroid Vesta and will begin using cameras for the first time to aid navigation for an expected July 16 orbital encounter. ...
Space & Earth / Space Exploration
May 03, 2011 |
5 / 5 (11) |
3
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Swift and Hubble probe an asteroid crash (w/ video)
(PhysOrg.com) -- Late last year, astronomers noticed an asteroid named Scheila had unexpectedly brightened, and it was sporting short-lived plumes. Data from NASA's Swift satellite and Hubble Space Telescope ...
Space & Earth / Space Exploration
Apr 28, 2011 |
5 / 5 (6) |
10
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WISE delivers millions of galaxies, stars, asteroids
(PhysOrg.com) -- Astronomers across the globe can now sift through hundreds of millions of galaxies, stars and asteroids collected in the first bundle of data from NASA's Wide-field Infrared Survey Explorer ...
Apr 15, 2011 |
5 / 5 (14) |
1
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Cold asteroids may have a soft heart
A new analysis of one of the most well-known meteorites on Earth provides strong evidence that the prevailing view of many asteroids is wrong. Rather than randomly mixed blobs of rock and dust stuck together, ...
Space & Earth / Space Exploration
Apr 08, 2011 |
5 / 5 (10) |
8
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New horseshoe orbit Earth-companion asteroid discovered
(PhysOrg.com) -- Apostolos Christou and David Asher from the Armagh Observatory in Northern Ireland announced the discovery of an asteroid near Earth called Asteroid 2010 SO16 and their findings were published ...
Space & Earth / Space Exploration
Apr 06, 2011 |
4.7 / 5 (27) |
11
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Asteroid
Asteroids, sometimes called minor planets or planetoids, are small Solar System bodies in orbit around the Sun, especially in the inner Solar System; they are smaller than planets but larger than meteoroids. The term "asteroid" has historically been applied primarily to bodies in the inner Solar System since the outer Solar System was poorly known when it came into common usage. The distinction between asteroids and comets is made on visual appearance: Comets show a perceptible coma while asteroids do not.
For more information about Asteroid, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
