Experience the Gravity of a Super-Earth

HD 40307 g, a super earth exoplanet is on a poster featuring a skin diver without a parachute.
March 23, 2016
  • english

Twice as big in volume as the Earth, HD 40307 g straddles the line between "Super-Earth" and "mini-Neptune" and scientists aren't sure if it has a rocky surface or one that's buried beneath thick layers of gas and ice. One thing is certain though: at eight times the Earth's mass, its gravitational pull is much, much stronger.