Earth

NASA is launching an ‘artificial star’ into orbit around the earth. That is why. : ScienceAlert

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Astronomers usually deal with the very, very big—huge telescopes, giant galaxies, and massive exploding stars. But one of the most revolutionary astronomy tools of the decade is a mini satellite the size of a bread box. The satellite will act as an artificial star for astronomers to observe from the ground, allowing them to more … Read more

NASA trains a bizarre scenario where the elusive asteroid heads for Earth

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What if, in 14 years, a newly discovered asteroid was likely to hit Earth? But that’s not all. This menacing space rock, about 330 to 1,050 feet in diameter (or 100 to 320 meters), has just disappeared behind the sun, making crucial observations impossible for the next seven months. To prepare for such a disturbance … Read more