The space agency's planetary science analysis groups must pause while NASA checks if they comply with Trump's orders.

Our Solar System, like a sneaky little hobbit, seems to have stuffed its pockets full of hidden oceans. Jupiter, Saturn, ...

Lunar geologist Zachary Morse scrabbles over Earth's rocky landscapes to test equipment for future missions to the Moon and ...

The moon may still be geologically active, judging from the way the lunar far side is wrinkling as the moon contracts. At ...

Two gargantuan canyons on the moon were carved by a hailstorm of rocks — and that’s good news for future lunar astronauts.

Using energy greater than the global nuclear weapons inventory, an impact event carved two grand canyons into the moon’s ...

Scientists developed advanced dating methods to track geological changes on the far side of the moon and found evidence of ...

Planetary geologists are not sure why this is the case. One theory is that a dwarf planet more than 435 miles (700 kilometers) across and loaded with radioactive isotopes struck the nearside long ...