The acid yellow moon Io that orbits Jupiter may be less than 30% the size of Earth, but is considered the most volcanic body ...

The eruption released energy six times greater than all Earth's power plants combined, exceeding 80,000 trillion watts.

Venus, Jupiter, and Mars dominate the sky. Catch your last views of Saturn as early in the month, the Moon passes in front of ...

I pick out North America’s celestial highlights for the week ahead (which also applies to northern hemisphere mid-northern ...

NASA’s Juno spacecraft has uncovered an immense volcanic hot spot on Jupiter’s moon Io, surpassing any previously recorded ...

The closest of the asteroids to us—estimated to be about the size of a car—is whizzing through space at 27,358 miles per hour ...

Our Solar System is a carefully balanced celestial dance held together by a virtually perfect balance of gravity and inertia.

NASA’s Juno mission found Io’s biggest volcanic eruption ever. The explosion was stronger than all Earth’s power plants ...

According to NASA, this is around the time when the planet is closest to Earth, making it appear bigger and brighter. Mars is ...

Planetary alignments aren't rare, but they can be when they involve six of the eight planets in our solar system.