Learn how the European Space Agency's spacecraft captured a completely new view of the Sun, thanks to its novel tilted orbit.

There could be a ninth planet in our Solar System after all - and no, it's not Pluto. Instead, it's the theoretical Planet X, also called Planet Nine, a wide-orbit planet that would circle the Sun ...

The nights surrounding June 7 will see Jupiter and Mercury crowd together close to the horizon in the northwestern sky.

“Estimated net savings” is the average amount residents in that state will save on electricity over 25 years, including their cost of installing a solar energy system. Compare Circle L Solar ...