Way back in 2013 NASA chose TESS as one of its future missions and it was originally pegged to launch last year.

That launch will finally happen today with liftoff set for 6:32 p.m. EDT from Space Launch Complex 40 at Cape Canaveral Air Force Station.

The prediction is 80% for favorable weather for liftoff.

NASA TV will televise the launch from 6 to 8 p.m. live.

If you aren’t familiar with TESS, or Transiting Exoplanet Survey Satellite, it’s goal over the next two years is to conduct scans on 200,000 of the brightest stars near our solar system.

The goal is to look for dips in the brightness of the stars that indicate orbiting planets.

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