NASA astronaut Zena Cardman shared timelapse footage of Earth from space after returning from a mission aboard the ...
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Earth has no way to stop 'city killer' asteroids, NASA chief warns
“What keeps me up at night is the asteroids we don’t know about," said NASA's planetary defense chief.
The object is hurtling towards the Earth at a zippy 12,616 miles per hour, according to data from the space agency.
Two next-generation satellite missions announced Thursday will help NASA better understand Earth and improve capabilities to ...
"We don’t know where they are,” said NASA’s planetary defense officer Kelly Fast at the AAAS conference in Arizona this week.
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