NASA scientists calculated that Earth should have captured a "second moon" on Sunday (Sept. 29). The "mini-moon" is actually the tiny asteroid 2024 PT5, which usually orbits the sun as part of a small ...

New research suggests that Theia, the object whose collision with Earth is theorized to have caused the formation of the moon, came from closer to the sun. Artist’s impression of the collision between ...

Earth, sun, moon: three objects in space whose interactions have a pretty big impact on our lives. Earth orbits the sun once a year, and it rotates on its axis about once a day (depending on your ...

A suite of scientific balloons is about to lift off from NASA’s Columbia Scientific Balloon Facility’s field site in Fort Sumner, New Mexico, carrying instruments that will help scientists understand ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A small space rock ...

Earth may have a moon today because a nearby neighbor once crashed into us, a new analysis of Apollo samples and terrestrial rocks reveals. When you purchase through links on our site, we may earn an ...

NASA's astronomers have recently discovered a ‘quasi-moon' orbiting within Earth's orbital neighbourhood. This quasi-moon spotted in 2025 is an asteroid and not the first celestial object to be ...