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What other celestial objects could come in a crash collision with our planet?
What other celestial objects could come in a crash collision with our planet?
29.07.2014, 18:26
Rank: 7
This month:
Besides the asteroids which are forming the Main Belt, there are several other groups, called Trojans. The most significant Trojan group shares the orbit with Jupiter, ahead and behind the planet. Asteroids of this group of are called after the characters from Troy war. But there are also some asteroids found in the outer Solar System, beyond Jupiter, such as 2060 Chiron, discovered in 1977, or 944 Hidalgo, but they are referred to more often as Centaurs ( there are debates over whether they should be classified as comets or asteroids). Regarding the asteroids close to the Earth's orbit (Near-Earth asteroids such as the groups of asteroids Apollos, Amors, and Atens), there were over 7,000 discovered in may 2010. Those with diameters greater than 1 kilometer can be considered a potential danger to our Planet.

Along with Jupiter, Neptune and Mars share orbits with Trojans and it remains to be found in the near future if Earth also has Trojans. For one year, from 2010 through 2011, NASA's WISE (Wide-field Infrared Survey Explorer) Mission gathered information about the near Earth objects with the help of a telescope which scanned the entire sky in infrared light. The result of the observations was 2010 TK7, an asteroid confirmed as an Earth Trojan , 300 meters across, that has an unusual orbit. However, this Trojan does not represent a potential danger for our Planet, as it will not come closer to Earth more than 24 kilometers.
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