Skywatchers will witness a rare event as the Moon, Mars, and Mercury appear close together in the twilight sky this October.

Tonight, October 23, 2025, stargazers are in for a rare treat as the waxing crescent moon lines up with Mars and Mercury just ...

The 6%-lit waxing crescent moon will be visible roughly 5 degrees above the horizon as the sun sets on Oct. 23, with Mercury ...

Mars’ north polar vortex locks its atmosphere in extreme cold and darkness, freezing out water vapor and triggering a ...

The tests also revealed that the ditches only develop on dunes with very fine, evenly sized sand grains. Coarser or more ...

Arsia Mons, an ancient Martian volcano, was captured before dawn on May 2, 2025, by NASA’s 2001 Mars Odyssey orbiter while the spacecraft was studying the Red ...

When Earth is opposite Mars from the sun, it will appear full because you’re looking directly on the daylit side. But ...

Scientists combined 20 years of Mars images to track over 1,000 dust devils, revealing powerful winds that shape the Red ...

NASA says they've discovered the clearest evidence of potential life on Mars to date, but as history shows, finding actual proof of life remains a difficult task.