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 ...

In a memorable image from the 1977 film "Star Wars," the young hero Luke Skywalker gazes at two suns setting above the ...

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 closure to Stampfl's family.

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 ...

The image of Luke Skywalker gazing wistfully across the desert of Tatooine while a pair of “suns” set on the horizon is among ...

A group of comets with unexplained movements presents a quandary D avide Farnocchia hunts down and tracks asteroids, and ...

A team has revealed new insights into the motion of massive stars in the Small Magellanic Cloud (SMC), a small galaxy neighboring the Milky Way. Their findings suggest that the gravitational pull of ...

Einstein believed that black holes didn't really exist. But they do: that much we know. We don't know much else about them.

Using the radial velocity method, an international team of astronomers has discovered a new extrasolar planet orbiting a ...

Scientists at Nagoya University in Japan were surprised by their study results, which they say are "indisputable." ...