KWAH-zee-SAT-ah-lite n. A body that orbits the sun and appears to orbit Earth. Asteroid 2016 HO3 appears to orbit Earth, but that’s just an illusion. As the space rock loops around the sun, it plays ...

In case you missed it, Earth has a second moon. “Our calculations indicate 2016 HO3 has been a stable quasi-satellite of Earth for almost a century,” a June 15, 2016, NASA release attests, “and it ...

It seems the moon is not Earth's only cosmic companion. The newly discovered asteroid 2016 HO3 orbits the sun in such a way that the space rock never strays too far from Earth, making it a ...

Turns out the moon isn't the only object hanging around Earth. Scientists discovered an asteroid named 2016 HO3 that sticks so close to Earth as it orbits the sun that astronomers have labeled it a ...

Asteroid 2016 HO3 has an orbit around the sun that keeps it as a constant companion of Earth. Earth has only one true natural satellite: the moon. But now scientists have found a fellow satellite of ...

A small asteroid has been discovered in an orbit around the sun that keeps it as a constant companion of Earth, and it will remain so for centuries to come. As it orbits the sun, this new asteroid, ...

The Earth has one satellite, right? That fact is so solid, we just call it the Moon with a capital M. But due to a trick of gravity and timing, there are other objects out in space that aren’t really ...

The Moon isn't the only traveling buddy keeping the Earth company on its journey around the Sun. Occasionally an asteroid will get caught in a gravitational dance with our home for a few years or so, ...

Your support goes further this holiday season. When you buy an annual membership or give a one-time contribution, we’ll give a membership to someone who can’t afford access. It’s a simple way for you ...

China has launched a space probe that will travel to an asteroid near Mars to collect samples and find potential "groundbreaking" results. The Tianwen-2 probe launched Thursday from the Xichang ...