"It could represent some of the oldest and most pristine water ever observed, formed in another planetary system and ...

If some asteroid big enough to do damage has us in its crosshairs, we hope we’ll know about it as soon as we can, giving us enough time, perhaps, to do something about it.

California, Colorado, and Oregon ranked among the best states for witnessing the celestial phenomena, according to a recent study.

The long-serving space telescope saw the third interloper to enter the solar system from beyond its limits late on Monday ...

The Bosumtwi impact crater in Ghana is different, however. It is well preserved (not deeply eroded or buried under sediments) ...

A recent review in journal Earth and Planetary Physics highlights that China's Tianwen-2 mission, launched on May 29, 2025, will carry a penetrating radar to directly probe the internal structures of ...

Meteor showers in July 2025 include the Perseids, Alpha Capricornids and Delta Aquariids. Here's when each shower peaks and how to see it in Arizona.

Over the course of that violent stretch, which lasted about 500 million years, Mercury, Venus, Earth, Mars, and the moon were regularly pounded by asteroids, meteors, and other cosmic ordnance ...

June 30 is Asteroid Day, which honors the Tunguska event in Russia 117 years ago and teaches about asteroids and their impacts on Earth.

Have you ever wondered how many stars you can see at night? From a perfect dark sky location, free from any light pollution, a person with excellent vision may observe a few thousand stars in the sky ...