NASA astronaut Nichole Ayers photographed a rare atmospheric phenomenon over the US and Mexico known as a "sprite" that's associated with lightning.

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

Here’s a look at the first moon landing on July 20, 1969. The moon landing was watched by an estimated 600 million people around the world. Facts July 20, 1969 – [4:17 p.m. EDT] Apollo 11 becomes the ...

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For one, scientists observe a "cosmic fossil" called the cosmic microwave background (CMB). The first light that was free to ...

Earth and our entire Milky Way galaxy may sit inside a mysterious giant hole which makes the cosmos expand faster here than in neighboring regions of the universe, astronomers say.

Images of the cosmos, such as the James Webb Space Telescope’s deep space snapshot, make space look chock-full of stuff. In the grand scheme of things, it is, but all those stars, galaxies, planets, ...

Astronomers claim to have found new evidence supporting a controversial observation that our galaxy is residing in an ...