If you’re a fan of GFR, there’s a good chance you grew up dreaming of leaving footprints in alien sand, watching a sun other than our own sink below a mysterious horizon. Even though the prospect of venturing beyond our homeworld still seems impossibly distant for most of us, it’s a dream that lingers. If you’re forever dreaming about posting #yolo from the crest of Olympus Mons, these lovely travel posters mocked up by NASA are only going to make things worse…because they represent exoplanets discovered by the Kepler telescope, real destinations that you could, if you happened to have a starship lying around, actually visit.
Twice as big in volume as the Earth, HD 40307g 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 time the Earth’s mass, its gravitational pull is much, much stronger.