The Ring Nebula, a stunning celestial structure residing in our neighborhood of the Milky Way galaxy, was discovered by ...

Mars today is a frozen, dusty desert. But if you look deep inside Valles Marineris, the largest canyon system on Mars and in ...

Astronomers found an iron bar in the Ring Nebula that doesn't match any known stellar phenomenon. Scientists can't explain ...

One of the most stubborn issues in cosmology today concerns the universe's rate of expansion. Scientists know it's expanding, ...

An astronaut photographs a mesmerizing sequence of Starlink satellites in orbit. As Trump zeroes in on Greenland, Texas Sen.

"It's like watching a cosmic volcano erupt again after ages of calm — except this one is big enough to carve out structures ...

The James Webb Space Telescope has delivered its clearest view yet of a supermassive black hole's immediate surroundings, ...

I have been writing about the Giant Magellan Telescope for a long time. Nearly two decades ago, for example, I wrote that ...

Iowans may have a chance to see the northern lights tonight as the Space Weather Prediction Center has issued a severe ...

Four of the planets, which are Mercury, Venus, Jupiter and Saturn, are bright enough to be spotted with the naked eye in ...