Astrological conjunctions occur when planets are close, mixing their energies significantly. These planetary combinations are ...

A pair of giant planets circling a star more than 1,100 light-years from Earth looks almost too bloated to be real. Each world is about the size of Jupiter. Yet both are far lighter than expected, ...

A new investigation into old Kepler data has revealed that a planetary system once thought to house zero planets actually has two planets that orbit their star in a unique style, like an old-fashioned ...

Add Yahoo as a preferred source to see more of our stories on Google. And yes, there is a difference between the two celestial sights. "Planetary alignment is an astronomical term used to describe the ...

Astronomers call it KOI-134, and it's a star located 3,747 light-years away from Earth. Despite the huge distance that separates us, we've known it was there for more than a decade now, ever since the ...

WASHINGTON, April 18 (Reuters) - In a memorable image from the 1977 film "Star Wars," the young hero Luke Skywalker gazes at two suns setting above the horizon on his desert planet Tatooine.

Observing the planets is one of the most awe-inspiring ways to witness the magic of the night sky—and there’s no better way to view them than in a planetary alignment. This is where multiple planets ...

As the members of the solar system roam the sky, we're treated to endless meetings between them. Look up on September 6 and watch how the moon narrowly passes Jupiter, then visits Saturn two nights ...