Here’s what you should know when you go outside to see for yourself: Yes, the planets are indeed lined up across our sky. No, ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

A U.S. scientist searching for a civilization across 7 Earth clones circling the red dwarf star TRAPPIST-1 says its own alien ...

Astronomers discovered the gas giant planet — dubbed a "hot Jupiter " — in 2016, but have continued to investigate this ...

Cosmic rays coming from outside the Solar System bring these particles closer to the Sun, where they experience changes ...

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

Stargazers will be treated to a dazzling six-planet "alignment" this January.

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.

Six planets are parading across the sky, appearing as some of the night's brightest stars. A few easy tips can help you ...