Earth has a number of mini-moons and quasi-moons. Mini-moons are objects that orbit our planet. But they make for fickle fans: They tend to swing around Earth for only a matter of months. One example ...

So the bottom line is that the gravity of the closer tidal bulge on the Earth is pulling the Moon forward, which increases ...

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

Earth has a hidden moon that has been sharing its orbit since the 1960s, researchers claim A new astronomical body has been ...

This week in Starwatch, I want you to go sky high to dig for some of the great visual treasures waiting for your eyes. Now ...

This week in Skywatch I want you to go sky high to dig for some of the great visual treasures waiting for your eyes. And now ...

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

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

Every year, the moon, Earth's reliable celestial companion for 4.5 billion years, is getting 1.5 inches away. The distance to the moon is calculated by measuring the amount of time it takes for light ...

A new NASA mission will capture images of Earth's invisible "halo," the faint light given off by our planet's outermost atmospheric layer, the exosphere, as it morphs and changes in response to the ...

3I/ATLAS, an interstellar object currently zipping through the solar system, is capturing the attention of astronomers, the public and even most of our deep space assets. Its hyperbolic orbit tells us ...

Much as we may treasure and proclaim our independence, we actually live in a protective bubble called the heliosphere.