In celebration of the Hubble Space Telescope's 35 years in Earth orbit, NASA is releasing an assortment of compelling images ...

Spanning approximately 220,000 light-years across, the Andromeda Galaxy is the largest galaxy of the Local Group, which also ...

From Lowell Observatory to Kitt Peak to Mount Graham, here are the 11 best planetariums and observatories in Arizona and everything you can do there.

Originally, the hypothesis was that Theia gave the Earth a glancing blow, and the proto-Earth and Theia lost pieces ending up as one or two moons that eventually formed the Moon. It was thought that a ...

Finding evidence of life in the cosmos is the “holy grail” of exoplanet science, one of the scientists said, but there is ...

The Case of the Missing Matter "We robustly show that the gas is much more extended than the dark matter" relative to subatomic particles called baryons, according to the paper, w ...

Researchers using NASA's Hubble Space Telescope have discovered the magnetar called SGR 0501+4516 is traversing our galaxy ...

Ostriker is responsible for groundbreaking discoveries that forever changed the way astronomers think about what the universe ...

Despite a few months topping the hit list of the most dangerous asteroids, it is now certain that 2024 YR4 won’t hit our ...

Since red shift is caused by motion, 3C-147, Schmidt decided, must be speeding away from the earth at 76,000 miles ... reasonably certain that 3C-147 is a galaxy that exploded several billion ...

When I was a kid, I was fascinated by the Powers of 10 video, which came out in the 1970s. Perhaps you remember it, with the narrator taking us both outward toward the fathomless end of the Universe ...

Every galaxy is thought to form at the center of a dark matter halo — a region of gravitationally bound matter that extends far beyond the visible boundaries of a galaxy. Stars are formed when gravity ...