The Laser Interferometer Space Antenna or LISA mission will study the mergers of supermassive black holes, test Einstein's Theory of General Relativity, and probe the early Universe. Detecting gravitational waves is a new way to observe the Universe. Through them we will learn more about the mergers of giant black holes and the death spirals of stars that black holes capture and swallow. LISA will look for gravitational waves coming from our Galaxy and other galaxies. LISA will also map the structure of space and time around black holes and determine if Einstein's theories are correct.

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