Mars is closer than ever, but the human body isn’t ready. Inside the biological war against radiation, microgravity, and ...

Astronomers have made an unexpected and groundbreaking discovery in our solar system—a ring system forming around Chiron, a ...

Astronomers believe they may have uncovered evidence of a hidden Earth -size planet lurking in the outer solar system. Dubbed “Planet Y”, the proposed world could be nearly twice as close to Earth as ...

On this week’s “More To The Story,” environmentalist Bill McKibben examines how the remarkable rise of solar power could ...

The rings of Saturn are among the wonders of our solar system, with a diameter of roughly 175,000 miles (280,000 kilometers) ...

Conquer the cosmos and lead ships, fleets, and even entire civilizations to victory in the best space strategy games.

When it comes to science, a simple observation can upend everything you think you know, such is the case with one star ...

ESA’s Mars orbiters captured images of the interstellar comet 3I/ATLAS as it passed close to Mars, revealing its bright, hazy ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth ...

Comet SWAN will make its closest approach to Earth — coming within 24 million miles of us — on October 20, while comet Lemmon ...