NASA’s new satellite brings the search for Earthlike exoplanets closer to home

  |   Tech News

After a 2-day delay for extra checks, NASA’s latest exoplanet-hunting satellite, TESS (Transiting Exoplanet Survey Satellite) was launched yesterday on a SpaceX Falcon 9 rocket. Within an hour, the solar arrays that will power the spacecraft were deployed. TESS is the first of a new generation of exoplanet hunters that will home in on temperate worlds close to Earth.

The brainchild of researchers at the Massachusetts Institute of Technology (MIT) in Cambridge, the $337 million project aims to identify at least 50 rocky exoplanets—Earth-size or bigger—close enough for their atmospheres to be scrutinized by the much larger James Webb Space Telescope (JWST), due for launch in 2020, or giant ground-based telescopes currently under construction.

Yesterday's launch went smoothly, but it will be a couple of months before TESS starts work. Over the next several weeks, TESS will use boosters to elongate its orbit until it reaches as far as the moon. It will then use the moon’s gravity to boost it into a particular 13.7-day orbit, never before used by a satellite, that swings between 400,000 and 100,000 kilometres above Earth.

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