He wasn't wrong—the sun is 99.8 percent of the mass of the solar system. But what is that giant ball of fire in the sky? How ...

Who Built it and Why? Despite it being humanity's constant companion through all of recorded time, the moon is still a ...

On April 25, 2025, a rare triple conjunction of Venus, Saturn, and the crescent moon will form a smiley face in the sky, ...

Lyrid Meteors can be seen on April 22 with the naked eye. Hide out in the mountains, beaches or expanded parks to observe.

The Lyrid meteor shower peaks on April 21–22, and a new AccuWeather map highlights the best spots to catch the show.

Astronomers are applying new image-processing techniques to previously released Hubble observations in honor of the space ...