Hubble's study reveals Andromeda experienced major galactic collisions, unlike Milky Way. Its satellite galaxies show unusual ...

The Milky Way is one of the biggest in the observable universe: Even if you traveled at the speed of light, it would take 100,000 years to go from one end of our home galaxy to the other.

The answer is emphatically “yes,” although some editorialists from left and right have tried to downplay the gravity of the ... precisely because the prior arrangement under the Articles ...

They're not as prominent as Saturn's, but Jupiter's massive gravity has pulled in enough material to give it a few. Most telescopes can't resolve the ... the smoother arrangement of older stars ...

It was one of the most perplexing and nail-biting Oscars races in years, with many pundits predicting a wide spread of awards ...

We experience the flow of time because it’s a natural outcome of the basic laws of physics. But we may need to build a whole ...

If gravity arises from entropy, scientists could unite Einstein's general relativity with the quantum realm while shedding ...

The shape of a planet's orbit is one of its fundamental properties, along with its size and distance from its host star.

By Katrina Miller Astute skywatchers may have already seen the striking line of planets across the night sky in January. This week Mercury joins the queue. Now every other world in our solar ...

"To make the specific arrangement of orbits we see with TRAPPIST-1, planets need to migrate inside the disk, a process that requires the presence of gas," said Ilaria Pascucci, a professor of ...