At half the size of Earth and one-tenth its mass, Mars is a featherweight as far as planets go. Yet new research reveals the ...

Curious Kids is a series for children of all ages. If you have a question you'd like an expert to answer, send it to ...

Which way is ‘down’ has a different answer depending on where you are on Earth, in the solar system, in our galaxy and beyond ...

Scientists discover asteroid spinning once every 1.88 minutes—the fastest rotation ever found for a large space rock. Five ...

You're not imaging it. The sun has been rising later in Illinois following the winter solstice. But the days aren't getting ...

The crew member remains in stable condition, NASA Administrator Jared Isaacman said during a news conference at NASA ...

Learn 7 fascinating facts about Earth Rotation Day 2026 and understand how our planet’s spin affects time, seasons, and life ...

2025 MN45 isn't the overall spin-rate record holder. Astronomers have found a number of small asteroids — those just a few ...

An artist’s illustration depicts 2025 MN45—the fastest-rotating asteroid with a diameter over 500 meters that scientists have ...

Earth’s Rotation Day 2026, observed on January 8, highlights how Earth’s constant rotation shapes day and night, climate, ...

Astronomers analyzing data from Vera C. Rubin Observatory have discovered the fastest-ever spinning asteroid with a diameter ...

During winter in the United States, the Earth's Northern Hemisphere is tilted away from the sun. Less sunlight shines ...