Astronomical Events

Scientists defy Einstein's prediction and use relativity to measure a star's mass

Scientists defy Einstein's prediction and use relativity to measure a star's mass

Astronomers scanning the skies with NASA’s Hubble Space Telescope have pulled off a feat that even Albert Einstein had declared all but impossible: they’ve witnessed the subtle bending of one star’s light by another star’s gravity and used that distortion to measure a star’s mass.

The findings, unveiled Wednesday at a meeting of the American Astronomical Society and published in the journal Science, confirm a key tenet of Einstein’s landmark general theory of relativity and introduce a new tool with which to explore a fundamental property of stars.

The general theory of relativity,...

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