Our planet has apparently had a small companion that went undetected for decades. What took so long to find it and why was it ...

Astronomers have identified a small asteroid, designated 2025 PN7, orbiting near Earth, intriguingly behaving like a quasi-moon.

University of Virginia astronomy undergraduates focus on the shadows of asteroids and dwarf planets for their Earth-bound ...

The asteroid will pass the Earth at a distance of about 135,000 miles (about 217,000 km), considered "close" in astronomical ...

Earth has a new friend — and it's been waiting for us to notice it for decades. In a new study published in the journal ...

Astronomers discover asteroid 2025 PN7, earth's latest quasi-satellite, revealing insights into planetary dynamics and ...

The Japanese Aerospace Exploration Agency, or JAXA, expects its spacecraft to rendezvous with the asteroid in July 2031. The ...

NASA's Hubble Space Telescope detected material from a Pluto-like body spiraling into a white dwarf star 260 light-years away ...

Whenever astronomers detect something new moving through our region of space, like an interstellar object or an unusual ...

At the recent 3rd International Conference on Deep Space Exploration (Tiandu), Chinese scientists proposed the concept of establishing a relatively complete detection and defense system for near-Earth ...

The American Apophis Strategy is simple, powerful, and cost-effective: keep OSIRIS-APEX on track and unleash Janus through a public-private partnership. This would put the U.S. in the lead — not just ...

Everyone who has ever lived on Earth has been well-aware of the moon, but it turns out Earth also has some frequent temporary companions. These "quasi-moons" are small asteroids that enter into a kind ...