Venus is a Victim of a Rampant Greenhouse Effect Venus's atmosphere is made mostly of carbon dioxide, one of the greenhouse ...

Earth formed over 4.5 billion years ago from a swirling cloud of gas and dust squished together by gravity. That same cloud gave rise to our entire solar system, including our star, the sun.

One million alien visitors from another star system could already be lurking in the solar system. We aren't talking about ...

and about 38% the size of Earth. This makes Mercury only slightly larger than the moon (at least relative to everything else in the solar system) since the moon is about 27% the size of Earth and ...

According to the researchers, taking an actual photograph of the Oort Cloud's theorized spiral from Earth would be incredibly difficult, and there are currently no resources dedicated to such an ...

Mar. 11, 2025 — A new study presents a compelling new model for the formation of super-Earths and mini-Neptunes -- planets that are 1 to 4 times the size of Earth and among the most common in ...

Primordial helium from the beginning of the solar system may be stuck inside Earth's solid core, new research suggests. The findings could have implications for a long-standing debate about how ...

There is growing excitement that deeper sediment surveys might someday reveal cosmic debris tied to the solar system’s journey into Orion. The researchers note that around the same time as this ...

Our solar system's journey around the center of the Milky Way takes it through varying galactic environments, and one may ...

Farther out – about 9.3 trillion miles away – sits the Oort Cloud, which some refer to as the outermost boundary of the Solar System. This region is believed to hold countless ... Check us out on ...

One exciting project currently happening is NASA’s Lucy mission, which is on a quest to learn more about asteroids orbiting near Jupiter known as Trojans. These asteroids are thought to be ancient ...