Researchers are discussing 2025 PN7, a small celestial body that's following a similar orbital path to our planet's without being gravitationally tied to Earth ...

The Earth stands alone in the solar system as a habitable world, as far as we know. But that doesn’t mean we don’t get visitors, most often in the form of (usually harmless) asteroids. Some even ...

Over 4.6 billion years ago, the early Earth emerged from a swirling disk of gas and dust encircling the young sun. This primordial material collided and coalesced, forming larger bodies through the ...

Earth will be hosting a new guest this fall. No, it's not an alien. It's an asteroid. The space rock, which has been named “2024 PT5,” has been traveling along its normal path around the sun, but will ...

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

Timing is everything these days. Our communications and GPS networks all depend on keeping careful track of the precise timing of signals—including accounting for the effects of relativity. The deeper ...

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 ...

The findings suggest that similar moonlets could orbit distant exoplanets and their moons. researchers said. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...