A young exoplanet, TOI 1227 b, is shrinking and losing its atmosphere due to intense X-rays and high-energy radiation from its parent red dwarf star, confirmed a study using NASA's Chandra X-ray Observatory. The exoplanet "cannot survive X-ray blast from its star," said Attila Varga, lead author. It's estimated to lose one Earth atmosphere’s worth of mass every 200 years.