Scientists have discovered a previously unknown quasi-moon that’s been shadowing Earth’s orbit for decades, undetected, and will likely remain there for a few decades more. The quasi-moon, named 2025 ...

Driving a spacecraft around a planet isn’t anything like driving on a planet. A physicist explains orbital navigation.

An asteroid named 2025 PN7 will be sharing the Earth's orbit until 2083. Earth will have a visitor within its orbit for the next several decades, according to astronomers. An asteroid named 2025 PN7 ...

Its stable orbit provides astronomers with valuable data on orbital mechanics, gravitational resonance, and the behaviour of ...

Earth has one true moon, but there are also several asteroids known as quasi-moons that are in orbit with the sun. A newly discovered asteroid, 2025 PN7, is the seventh confirmed quasi-moon that ...

Astronomers have spotted a quasi-moon near Earth — and the small space rock has likely been hanging out near our planet unseen by telescopes for about 60 years, according to new research.Related video ...

A private spacecraft carrying NASA instruments to the surface of the moon in preparation for astronauts to return in the years ahead has reached lunar orbit about a month into its spaceflight.

It's largely agreed that the moon was created around 4.5 billion years ago when a protoplanet collided with early molten ...