Here's why Jupiter's tally of moons keeps going up and up
The first astronomer to discover moons around Jupiter was Galileo, back in the year 1610, but astronomers are still finding more and more moons around this gas giant.
planetary science
NASA advisers call for a visit to Uranus, plus more science during moon landings
NASA should send probes to the ice giant planet of Uranus and to a moon of Saturn where conditions could be right for life. Those are some of the recommendations in a new report to the space agency.
In a first, a mysterious rocket part is about to slam into the moon — by accident
A rocket part set to slam into the far side of the moon Friday morning highlights the growing issue of space junk in orbit around Earth, experts say
Astronomers find a new planet that's mostly made of iron
NASA's TESS telescope finds a small, iron-rich planet which could help explain the origins of Mercury, the innermost planet in our solar system
In a first test of its planetary defense efforts, NASA's going to shove an asteroid
NASA is about to launch the first mission of its new planetary defense office. A spacecraft will attempt to knock a small asteroid off course by ramming into it.