Astronomers find four Barnard’s Star planets to be small, uninhabitable, with years lasting only days
Barnard’s Star has four small rocky planets packed extremely close to the star.Their atmospheres probably disappeared billions of…
Jupiter’s volcanic moon, Io, hides intense heat beneath its porous crust
NASA’s Juno spacecraft measured heat below Io’s surface for the first time and found temperatures rise sharply just…
AI can quickly spot and catalog lunar craters, but accuracy remains a major problem
The Moon’s cratered surface may seem like the perfect place to hand repetitive work to machines. There are…
Mercury has a 10-mile-thick layer of diamonds under its surface
Mercury does not look like a world built for extravagance. It is small, battered, sun-scorched and gray. Yet…