Watch SpaceX launch NASA’s new planet-hunting satellite here

It’s almost time for SpaceX to launch NASA’s TESS, a space telescope that will search for exoplants across nearly the entire night sky. The launch has been delayed more than once already: originally scheduled for March 20, it slipped to April 16 (Monday), then some minor issues pushed it to today — at 3:51 PM Pacific time, to be precise. You can watch the launch live below.

TESS, which stands for Transiting Exoplanet Survey Satellite, is basically a giant wide-angle camera (four of them, actually) that will snap pictures of the night sky from a wide, eccentric and never before tried orbit.

The technique it will use is fundamentally the same as that employed by NASA’s long-running and highly successful Kepler mission. When distant plants pass between us and their star,…

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