The Earth has a second moon? Not exactly, though social media would have you believe it. Earth has only one true natural satellite – our 2,159-mile-wide moon located approximately 239,000 miles away.

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 ...

Earth has a newly discovered—albeit temporary—companion in its journey around the sun. In research published this month in Research Notes of the AAS, a non-peer reviewed publication from the American ...

The object, the latest “quasi-moon” detected by astronomers, could be with us for almost another 60 years. By Robin George Andrews The Earth stands alone in the solar system as a habitable world, as ...

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 ...

Researchers using a NASA supercomputer have modeled Earth’s long-term evolution and projected that the planet could become ...

As an astronomer studying the universe beyond Earth, I’m fond of “outside the box” views almost by default. But one of my favorites is whenever a spacecraft takes a snapshot of our home world and the ...

For the next two months, the moon will have a temporary companion in its orbit around the Earth. A small asteroid, called a “mini-moon,” will partially circle the Earth before returning on an ...

"I spy with my little lander, a moon in the distance..." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Blue Ghost, the "little lander" from ...