News tagged with spacetime

Fine-tuning Stephen Hawking's theory of mass

( —If you want to know your body's mass, you hop on a scale and watch the needle swing. But if you want to know the mass of a region out in space, there's no cosmic equivalent—the best you can do is consult a ...

dateMar 18, 2014 in General Physics
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Gravitational telescope creates space invader mirage

(—The NASA/ESA Hubble Space Telescope is one of the most powerful available to astronomers, but sometimes it too needs a helping hand. This comes in the form of Einstein's general theory of relativity, which makes ...

dateMar 05, 2013 in Astronomy
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