James Webb Telescope JUST Discovered Another Earth-Like Planet!
NASA’s James Webb Telescope hit another milestone on Wednesday, identifying its first exoplanet 41 light-years away that is almost exactly the same size as Earth.
Formally dubbed LHS 475 b, the rocky planet is just 1% smaller than Earth’s diameter. “Webb is bringing us closer and closer to a new understanding of Earth-like worlds outside our solar system, and the mission is only just getting started,” Mark Clampin, the Astrophysics Division director at NASA Headquarters, said in a statement. NASA’s Transiting Exoplanet Survey Satellite first hinted at the planet’s existence, which was confirmed by Webb’s Near-Infrared Spectrograph.
While LHS 475 b is almost the same size as Earth, the planet is a few hundred degrees warmer and the makeup of its atmosphere is unclear. Additional observations are set to take place this summer to try to figure out the atmosphere’s composition, if it has one at all.
“There are some terrestrial-type atmospheres that we can rule out,” Jacob Lustig-Yaeger, a doctoral fellow at the Johns Hopkins University Applied Physics Laboratory explained on Wednesday. “It can’t have a thick methane-dominated atmosphere, similar to that of Saturn’s moon Titan.”.
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