Add Yahoo as a preferred source to see more of our stories on Google. Earth isn't alone in orbiting our sun; it's joined by a bunch of planets, moons, asteroids, and comets that we collectively call ...

Installing solar panels is a major investment. Be sure to ask these 15 questions before deciding if they’re right for you. Energy bills are on the rise. As the weather heats up, it’s going to take ...

The Solar System consists of eight planets that revolve around the Sun. Each planet has unique features, from the hot surface ...

If you have a lot of questions about whether you should add a solar energy system to your home, that's a good thing. It's an important undertaking that requires budgeting and both short-term and ...

Everything we know about the formation of solar systems might be wrong, says University of Florida astronomy professor Jian Ge and his postdoc, Bo Ma. They’ve discovered the first “binary-binary” – ...

The workings of our solar system are roughly the same now as they have been for millions of years. Moons circle their planets, the planets circle the sun, the sun’s magnetic fields and sunspots wax ...

Despite what your TV listing says, it isn’t always sunny in Philadelphia — or anywhere else. That means your solar panels won’t always be soaking up the sun’s rays. Solar panels are rapidly growing in ...