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25 August 2008
How To Save the World From Asteroid Impact: Plastic Wrap
Remember a competition we reported on back in April called "Move An Asteroid"? It was an international technical paper competition looking for unique and innovative concepts for how to deflect an asteroid or comet that might be on a collision course for Earth. The winners have been announced and first prize went to [...]
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25 August 2008
Rosetta Prepares for Meet-Up With Asteroid Next Week
ESA’s Rosetta spacecraft will make an historic encounter with asteroid (2867) Steins on September 5, 2008 at 20:58 CEST (Central European Summer Time), 2:58 pm EDT (US Eastern Daylight Time.) A few days ago, Rosetta conducted a successful trajectory correction maneuver using images from the spacecraft's cameras to calculate the asteroid's location, to [...]
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13 August 2008
Solving the Asteroid – Meteorite Puzzle
Astronomers studying ways to deal with incoming near-Earth asteroids (NEA) that might be on a collision course with our planet want to know in detail what these space rocks are made of. The better they "know the enemy" the better they can come up with ways to destroy or change the course of NEAs. [...]
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04 August 2008
Rosetta Begins Tracking Asteroid Steins for Flyby
Since waking up in early July from a brief hibernation, the Rosetta space probe has passed yet another milestone on the long journey to its rendezvous with the comet 67/P Churyumov-Gerasimenko in 2014: it has begun tracking the asteroid (2867) Steins. The spacecraft will perform a close flyby of the asteroid on September 5th, 2008, [...]
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27 July 2008
Bad Idea: Blowing Up Asteroids with Nuclear Missiles
The first thing that comes to mind when someone asks: "How do we deflect a near Earth asteroid?" is "Fire some nuclear missiles at it." However, this might not be the best course of action. Akin to opening a walnut with a sledgehammer, there might be a better, less messy option. This is what Apollo [...]
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14 July 2008
Where Do Meteorites Come From?
If you've ever held a real meteorite in your hand, you probably wanted to know, "Where has this rock been in space and where did it come from?" Until now, no one has been able to definitively establish where the majority of meteorites found on Earth came from because of the changes that occur [...]
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14 July 2008
Binary Asteroid Glides Past Earth
A rare event has given astronomers a great view of a binary asteroid system. Tonight, asteroid 2008 BT18 passed 1.4 million miles from Earth, shining like a 13th magnitude star. Before July 7th, astronomers believed 2008 BT18 was "just another" near-Earth asteroid, but then the Arecibo radio telescope obtained a "delay-Doppler" image of the asteroid [...]
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09 July 2008
The Sunny Side of Asteroids
Asteroids with moons, called binary asteroids, are fairly common in the solar system. But scientists haven't been able to figure out the dynamics of these asteroids, especially how the moons form. But a group of astronomers studying binary asteroids say the surprising answer is sunlight, which can increase or decrease the spin rate of [...]
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07 July 2008
Exploding Asteroid Theory Gains Evidence
About 13,000 years ago, woolly mammoths roamed the North American continent and the first known human society in that region, known as the Clovis civilization, lived there as well. But geologic and archeological evidence shows they both suddenly disappeared, and scientists have long debated the mystery of the mass extinction of both animals and [...]
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01 July 2008
Canada to build World's First Asteroid-hunting Satellite
Just yesterday (June 30th) was the 100-year anniversary of the Tunguska event, when a small piece of ice or rock created a huge blast crater near the Podkammenaya Tungus river in Siberia, flattening trees and scaring the heck out of people in the surrounding area. Thankfully, the blast didn't happen in a populated area and [...]
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16 June 2008
Rare Asteroid Studied by Hawaiian Scientists
Asteroid 10537 (1991 RY16) is a rarity. It is composed of basaltic rock (i.e. rock that cooled quickly after formation from a molten state) and appears to have evolved independently from the large asteroid Vesta. Vesta suffered a huge impact billions of years ago, and the debris from this collision litters the inner asteroid belt. [...]
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28 May 2008
What is the Fastest Spinning Object in the Solar System? Near-Earth Asteroid 2008 HJ
A British astronomer has discovered a strange spinning object. The fact that it is spinning in itself is not strange, but the speed it is doing so has raised some eyebrows. The near-Earth asteroid 2008 HJ has been spotted spinning at a rate of one rotation every 42.7 seconds, breaking the record for the fastest [...]
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06 May 2008
NASA Considers Manned Asteroid Mission
What would happen if we spot a Near-Earth Asteroid (NEO) heading straight for us? Assuming we had enough time, we might be able to pull together a group of brave astronauts (or oil drillers) and send them to the asteroid just in the nick of time to destroy it… oh hold on, that sounds like [...]
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06 May 2008
Comet Strikes Increase as We Pass Through the Galactic Plane
There are just so many ways the Universe is out to get us. Astronomers have already considered the threat from our Sun's orbit around the center of the Milky Way. When our Sun rises up out of flat plane of the Milky Way, it appears we might be less protected from intergalactic radiation and cosmic [...]
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06 May 2008
Asteroid Impact Created a Worldwide Rain of Carbon Beads
When a large enough asteroid strikes the Earth, the devastation effects the entire globe. And the dinosaur-killing asteroid that smashed into the Yucatan peninsula 65 million years ago was no exception. According to researchers, just one outcome from the strike: carbon in the Earth's crust was liquified and formed tiny beads that rained back down [...]
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