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NASA astronauts have documented superb images of a giant asteroid approaching the Earth on Saturday morning, while astronomers were launching an asteroid "2003 SD220" and describing "a hippo crossing the river with difficulty" .
The images show that the length of the asteroid is at least 1.6 km and that it is relatively slow, with a rotation time of about 12 days, such as the ". worn football ".
"This rotation comes under the name of" non-main axis ", which is unusual for asteroids close to Earth, NASA said.
The asteroid should record the closest flight to the Earth at 2.9 million kilometers, follow its path in space and return in 2070 to approach our planet again without any danger real.
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