orbit

Boeing races to catch SpaceX in orbit – but has it already lost?

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Boeing’s days in space may be numbered. And SpaceX may have become NASA’s new favorite space contractor. The International Space Station (ISS) orbits the Earth at an altitude of 250 miles. That doesn’t sound like much. You can drive 250 miles in an inexpensive sedan in about four hours or take a one-hour flight (if … Read more

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