SpacePluto may have hosted lakes and rivers of liquid nitrogen Studying how the dwarf planet's climate changed over time shows it once had the right conditions for liquid to flow on its surface - and may still have buried lakes today 51¶¯Âþ
SpaceLonely exoplanet orbits its star at greatest distance yet seen A closer look at the motions of a small star and a misfit planet shows the two are linked by gravity - and can teach us about planets and stars alike 51¶¯Âþ