Hubble observations show the Neptune-sized exoplanet GJ 3470b leaking a giant hydrogen cloud and shedding mass at a record rate. Astronomers say the planet may be on a long path...
NASA has finished assembling the Nancy Grace Roman Space Telescope at Goddard, advancing hardware and techniques that could reshape the hunt for habitable worlds and biosignatur...
Researchers report detection of GJ 251 c, a rocky super-Earth candidate orbiting within its star's habitable zone less than 20 light-years away. The planet is a promising target...
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