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Your position:Home > News > "Weird" asteroid hit.....

"Weird" asteroid hit the Earth in 2880 or will be able to cope with blizzard

  • Author:Clarence
  • Source:中国科技网
  • Release Date:2014-08-19

Weird "Asteroid 2880 to destroy the earth?

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Science and Technology Daily News & nbsp; University of Tennessee researchers recently discovered that one asteroid named 1950DA have 0.3% chance of hitting the Earth in 2880, and the release of destructive force. Compared with other asteroids, 0.3% of the figures have indicated that the threat 1950DA bring higher 50%. However, scientists say humans do not need this particular panic because of 1950DA own peculiar nature, some simple ways you can effectively deal with its threats.

1950DA first discovered in 1950, 23 February. It is observed in the range of human memory in the 17 days after the disappearance of the vast universe. December 31, 2000 after half a century, which is found in the first lesson of human asteroid "Ceres," the 200-year anniversary, 1950DA again. The researchers calculated that the 867-year March 16, 2880, 1950DA will again visit the earth. This time it's only 20 minutes of observation window, and can not be completely ruled out the possibility collision with the Earth.

According to the British "Daily Mail" reported the online edition on the 16th news that, in the run towards the Earth, 1950DA the speed reached 15 kilometers per second. If true asteroid collided with the Earth, its speed of 61,155 kilometers per hour, will tie into the Atlantic Ocean, and the release of 44,800 tons of TNT equivalent destructive power. Scientists said that although only 0.3% of this probability, but compared with other asteroids, threatening 1950DA bring higher 50%.

In the long history of the Earth, the asteroid's visit is not new. 6500 years of an impact on the end of the dinosaur era. However, compared with a loss of dinosaurs, face the same consequences might bring 1950DA, humans but has a simple and practical way to deal with. The reason is that the nature of the asteroid that 'queer'.

Just last week, there have been studies indicate, 1950DA loose structure belonging to an asteroid, by gravitation and friction to the various components together. However, these forces alone can not be in the high-speed movement, keep this pile of rubble in the aggregated state. In this regard, a postdoctoral researcher at the Department of Earth and Planetary Sciences, University of Tennessee Ben Rhodes Atlantis believes that the particles of which there must be a combination of internal forces that participate in van der Waals force. By observing the thermal imaging and 1950DA drift orbits and calculating the thermal inertia and the volume density, researchers eventually detect the generation of such electrostatic interaction between the molecules or atoms.

In short, 1950DA rely on rotation speed, beyond the disintegration of the density will make their own threshold. If launch nuclear weapons against it or colliding with a large mass of an object, such as the popular idea, but will break the shackles of force, causing more debris to pound the earth. The real effective method is not complicated - human asteroid surface to be sprayed chalk, charcoal or whiteGlassSlag and other changes in the reflectivity, relying on the energy of sunlight gradually adjust its trajectory.