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Saturday, October 8, 2011

Big Threat From Outer Space

Many are still not aware of the dangers that come from outer space. Previous research has noted, the impact of supernova explosions, solar flares, can damage the ozone layer of our earth. Numerous studies have also suggested earlier extinction of earth's creatures can not be separated from the outer space activities.
neutron explosive

Recent research suggests the threat of a short gamma ray bursts (short hard) due to the interstellar action is the most counts. Life on earth may be threatened by these gamma rays. Possible causes of short hard are collision between neutron stars or black holes. When these collisions occur in the Milky Way galaxy, then the impact will be felt. Although the blast only lasted one second, but the impact is very influential on the earth to the oceans on Earth.

This research has been done by Brian Thomas of Washburn University. Increased accumulation and data collected by the SWIFT satellite, which captures the action of gamma-ray bursts in other galaxies, is to give a better case for short bursts of power and threat to life on Earth. All effects will happen on earth alse learned.

Those effects are likely to have been devastating for many forms of life on the surface -- including terrestrial and marine plants which are the foundation of the food web. Based on what is seen among other galaxies, these short bursts, it seems that they occur in any given galaxy at a rate of about once per 100 million years. If that is correct, then it's very likely that Earth has been exposed to such events scores of times over its history. The question is whether they left a calling card in the sky or Earth's geological record.

Reprinted from sciencedaily.com, and NASA.

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