Life Beyond Earth

New Mystery Unfolds Around Purported ‘Alien Megastructure’ Orbiting Star

An illustration of a star behind a shattered comet. (NASA/JPL-Caltech)
An illustration of a star behind a shattered comet. (NASA/JPL-Caltech)

The Kepler Space Telescope looks for changes in the light emitted by some 150,000 stars. The idea is to detect shadows cast by orbiting objects...


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