A big, puffy planet orbiting a small, bright star in the constellation Virgo is leaking helium into space. It’s the first time astronomers have spotted the element on a planet beyond the Solar System, after more than a decade of searching.
A big, puffy planet orbiting a small, bright star in the constellation Virgo is leaking helium into space. It’s the first time astronomers have spotted the element on a planet beyond the Solar System, after more than a decade of searching.