James Webb Space Telescope reveals new clues about Neptune’s ancient moon system

Webb space telescope reveals a scorching “super-Earth” that looks like Mercury

A scorching, airless world just 48 light-years away is offering scientists a rare glimpse into the geology of distant planets. Using the James Webb Space Telescope, researchers studied LHS 3844 b—a tidally locked “super-Earth” with a permanent dayside hot enough to melt metal—and discovered it’s a dark, barren rock with no atmosphere.

James Webb Space Telescope reveals new clues about Neptune’s ancient moon system

More than three decades after Voyager 2 became the only spacecraft to fly past Neptune, NASA’s James Webb Space Telescope is revealing that the distant ice giant may have experienced one of the most dramatic events in the solar system’s history. more…