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 ...

Would you guess that the Earth is spinning at 1,000 mph around its axis and at the same time hurtling through space on its ...

A partial solar eclipse happens Sunday in parts of the Southern Hemisphere. Saturn will also appear at its brightest, with Earth directly between it and the sun.

This skywatching quiz will test your knowledge of how eclipses, when to see them, and what makes each one so spectacular.

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

The gravitational force of the Moon does not act uniformly across the entire Earth; it is strongest at point A, which is the ...

On September 14, 1959, the Soviet Union’s Luna 2 spacecraft became the first man-made object to reach the Moon. The mission, ...

▲ Wang Kechao, the popular science director of the Purple Mountain Observatory of the Chinese Academy of Sciences, introduced ...

The moon will appear a striking red color for millions of people around the world thanks to a total lunar eclipse in the first weekend of September — but sadly, it won't be visible from the United ...

An asteroid the size of a commercial jet passed closer to Earth than the Moon on September 3, 2025, in a high-speed flyby that drew global attention from skywatchers and astronomers alike. According ...