NASA’s James Webb Space Telescope Finds Its First Planet

Newly discovered planet is a few hundred degrees hotter than Earth and completes an orbit in two days
GREENBELT, MD - NOVEMBER 02:  Engineers and technicians assemble the James Webb Space Telescope November 2, 2016 at NASA's Goddard Space Flight Center in Greenbelt, Maryland. The telescope, designed to be a large space-based observatory optimized for infrared wavelengths, will be the successor to the Hubble Space Telescope and the Spitzer Space Telescope. It is scheduled to be launched in October 2018.  (Photo by Alex Wong/Getty Images)

At a glance

  • NASA’s James Webb Space Telescope discovered its first planet, which sits 41 light-years away from Earth. 
  • The exoplanet, which is formally classified as LHS 475 b., is rocky and is 99 percent of Earth’s diameter. 
  • Scientists have yet to determine what the atmosphere is made of, or whether it even has one.

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