Today marks the final day of the legislative session. Since the start of the 30-day session on Jan. 20, Earth, Wind and Fire ...

Would Earth’s growth change the composition of space?

Space around the Sun contains far more than planets. Scattered through it are smaller bodies made of rock, metal, ice and ...

Sky This Week is brought to you in part by Celestron. Friday, February 20Once the waxing Moon sets this evening, its ...

Jupiter’s moons are among the most fascinating worlds in the solar system, but reaching them is a monumental challenge. This exploration explains how far these moons really are, how long spacecraft ...

Six planets will line up in a rare "planetary parade" this month - but spotting them all won't be easy.

Six planets are above the horizon this weekend — but only two are obvious to the naked eye. Here’s what you’ll really see after sunset and when to look.

Planetary parades, or alignments, take place when major planets in the solar system appear aligned from our viewpoint on ...

Six planets will briefly share the twilight sky this month - but the conditions have to be just right.

Planetary systems in the Milky Way galaxy tend to follow a particular pattern: rocky planets toward the center, closest to ...

The president on Thursday ordered the release of federal files related to UFOs and aliens, although no evidence of extraterrestrials visiting Earth is known to exist ...

In the eastern Utah desert, carbon-dioxide-saturated water bubbles, sprays and foams from the ground. These cold-water geysers, sometimes called soda pop geysers, are a new and reliable Earth-based ...