The solar system has many more moons than the one we can see in the sky. But how many do we actually know about? And how many more are waiting to be discovered?

New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once orbited in mathematical harmony around the infant sun.

Think you know your way around the solar system? From the scorching surface of Mercury to the icy edges of Neptune, our planetary neighborhood is full of wonders. The order of the planets isn’t ...

Considering hopping on the solar bandwagon? We have the answers to all your burning questions to help you decide if solar panels are right for your home.

NPR's Ari Shapiro talks with astronomer David Jewitt about what we can learn from the third interstellar object to have entered our solar system, a comet-like object known as 3I/ATLAS.

Space NASA scientists make startling discovery about alien life in our very own solar system: ‘Big implications’ By Adriana Diaz Published Aug. 22, 2025, 1:14 p.m. ET ...

Solar System Planets. Astronomy articles on the eight planets, plus the two dwarf planets, Pluto and Eris. Great pictures of everything in the solar system. Updated daily.

If you’re thinking of adding solar panels to your home, it’s important to know the different types and determine which will work best for you.

With just one year until the total solar eclipse of 2026, we take a look at everything you need to know for the ultimate eclipse adventure.

Balcony solar promises to cut energy costs and grid reliance for renters and apartment-dwellers. I did a trial run at my home.