On July 3, 2025, NASA astronaut Nichole Ayers captured a stunning photo of an event originally thought to be a sprite.

Astronomers have discovered a vast and expanding bubble of gas and dust surrounding a red supergiant star—the largest structure of its kind ever seen in the Milky Way. The bubble, which contains as ...

The “ supersized ”​​​​​​​ A. alta weighs around 1.6 ounces (44 grams), or slightly less than a golf ball. “From what we know ...