The Eastern Conference’s top seed, the Cleveland Cavaliers, will take on the eighth-seeded Miami Heat, who advanced out of ...

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. Astronomers since then indeed have ...

No planet in our solar system has a polar orbit. The several exoplanets known to follow such a path orbit only a single star. When two stars, or in this case two brown dwarfs, orbit each other, it is ...

T he Sun goes through an 11-year cycle of activity, going from the solar maximum, where it is covered in many sunspots and is ...

A rare 'smiley face' triple conjunction is coming to Earth's morning skies on April 25, when Venus, Saturn and the crescent ...

NASA's PUNCH mission has captured its first images of the sun's outer atmosphere, marking a key milestone in understanding ...

Most people know that black holes are kind of scary. Admittedly, that's true, but black holes are so much more than that.

Bill Stampfl vanished climbing Peru's highest mountain 22 years ago. This is the story of the hiker who found him and brought ...

Why do comets and their meteoroid streams weave in and out of Earth's orbit and their orbits disperse over time? Researchers show that this is not due to the random pull of the planets, but rather the ...