Lunar minerals generate the rust mineral hematite when bombarded with high-energy oxygen particles, simulations show.

Happy autumnal equinox! Now, you can finally say fall is here — yesterday was still summer. Today, the sun enters Libra, the ...

Researchers are discussing 2025 PN7, a small celestial body that's following a similar orbital path to our planet's without being gravitationally tied to Earth ...

President Trump’s proposed NASA budget looks to drop 41 science missions including 19 that are operational in space. The new ...

The sun’s debut in Libra on Sept. 22 marks the beginning of fall in the northern hemisphere, highlighting themes of balance ...

Earth is the only planet in our solar system with a single moon, making it a rare phenomenon for a planet of its kind.

From cooler temps to fall foliage, there's plenty to be excited about for the start of fall — but what does the autumnal equinox actually mean?

Saturn will put on a show for professional and backyard astromers alike, and be the brightest and closest it has been to ...

A new moon is when the moon shares the same celestial longitude as the sun; the two bodies are said to be in conjunction.

Summer is officially over September 22, at 2:19 p.m. Time to hang up the surfboard, deflate the beach balls, stow the grill, put away the Hawaiian shirts, and have a good cry. Naturally you're angry.

Scientists detect a solid inner core on Mars for the first time, revealing a new chapter in planetary evolution.

Sky-gazers should get ready for a full day of celestial events on Sunday, including a partial solar eclipse in parts of the Southern Hemisphere. The partial solar eclipse will peak, the point at which ...