WFIRST

How to find another Earth

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WFIRST space telescope. Image: NASA

The search for a second Earth

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The "Einstein Ring", as photographed by the Hubble Space Telescope, is a phenomenon of gravitational collapse. When a massive mass passes on one axis between a more distant celestial gram and the Earth, the light rays of the more distant gram are bent around the massive mass and form a ring known as the "Einstein Ring" from the perspective of the observer on Earth. Examining slight changes in the gravitational clouding will allow the detection of planets around a star that creates such clouding. Source: NASA.

NASA has announced a new space telescope, WFIRST, to be launched in the next decade

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