But it’s not just looks. Rocky composition, general size, orbital behaviors—a lot of those qualities can be the same on both ...

Earthlings have never been terribly sophisticated cosmic tourists. Ask us which worlds we’d like most to visit and our answers are always the same: Mars! Jupiter! Saturn! Neptune! But there’s a ...

That faint moon, approximately 6 miles in diameter, brings the planet's total number to 29, and it's the fourteenth inner moon discovered. Uranus's Moons are named after Shakespeare and Alexander Pope ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. The ringed gas giant Saturn has officially replaced Jupiter as the ...