This is how NASA will defend Earth against a possible asteroid impact



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April 17, 2019

The space agency began looking for celestial bodies at a great distance from the planet to destroy them in time. "Objects close to Earth are weak and very small," they said.

NASA
NASA studies a defense mechanism to avoid impacts of asteroids

Hollywood movies have predicted this for a long time and it seems to be one of NASA's biggest fears. A possible Armageddon or Deep Impact are two possibilities, with very different ends, that have already been seen in the cinema and that the space agency tries to avoid.

With the threat of Bennu, the so-called asteroid of death, the National Aeronautics and Space Administration began investigating the celestial bodies a great distance from the planet, since those that are close to our orbit seemingly are not relevant.

This is Bennu, the "death asteroid" that could collide with Earth

"If we find a celestial object within a few days of impact, it will greatly limit our options, so we focus on finding objects near the Earth when they are farther away, providing the maximum amount of time and opening up a wider range of possibilities for mitigation ", he said Amy Mainzer, gives NASA.

The strategy to defend Earth from an eventual impact was presented on Tuesday at the American Physical Society meeting. Meanwhile, the principal investigator of the asteroid hunting mission gives NASA, at the Laboratory in Pasadena, Calif., said the procedure would be "difficult," and compared it to finding a piece of coal in the night sky.

"Objects close to Earth (NEO) are intrinsically weak because they are mostly small and very distant from us in space," he argued.

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"They are as dark as the printer's toner," he said. NASA at the same time he added that "trying to detect them against the black space is very difficult."

Mainzer took advantage of a NEO feature that allows you to detect them without having to go in the visible light to notice them: its heat.

"With the NEOWISE mission, we can detect objects regardless of the color of their surface and use them to measure their sizes and other properties," said the research scientist. NASA.

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