Discover why Earth's farthest distance from the sun coincides with summer heat, then grab your binoculars for a week of ...

Arizona is an ideal spot to see the Milky Way thanks to its numerous dark-sky places. Here's the best time to see - and ...

The Milky Way and the neighboring Andromeda galaxy are currently hurtling through space toward each other at a speed of about 250,000 miles per hour (400,000 kph), setting up a possible future ...

Scientists previously predicted the pair of galaxies would merge in about five billion years. Now, research suggests that ...

NASA has discovered an interstellar comet that’s wandered into our backyard. The space agency spotted the quick-moving object ...

The Andromeda galaxy is also known as Messier 31. It is a spiral galaxy located about 2.5 million light-years from Earth. On ...

Using gravitational microlensing, scientists have discovered a rare, large planet at the edge of the Milky Way. The planet is ...

Astronomers have found a new way of accurately mapping the outer gas disk of the Milky Way using the positions of young stars ...

Caption. The distance between the Milky Way and Andromeda in 50 simulations. Just slightly more than half of orbits result in a Milky Way - Andromeda collision within 10 billion years.

The Andromeda galaxy, also known as Messier 31 (M31), is the closest spiral galaxy to the Milky Way at a distance of about ...

Shapley argued that the spiral nebulae were small and in the Milky Way, ... He calculated M31’s distance as a prodigious 900,000 light years away, though he underestimated its true distance ...

The Milky Way is our home galaxy with a disc of stars that spans more than 100,000 light-years in distance. Because it appears as a rotating disc curving out from a dense central reason, the Milky ...