There’s nothing like a size comparison of stuff from fictional universes to help develop a better sense of their scale. Knowing how big Arrakis from Dune is relative to Pandora from Avatar, for ...

Earth’s been around for a long time. And during its tenure as a planet, has been slammed with a lot of cosmic objects; the largest of which left massive craters in their wake. In a new size comparison ...

An animation posted to Twitter has shocked social media users by showing the impressive size of Jupiter and just how rapidly the solar system's largest planet rotates. The animation posted by ...

Assuming you’ve accepted Pluto’s demotion, Uranus and Neptune are the two planets in our Solar System farthest from Earth. That distance means humanity is still learning a lot about them. Some of ...

Jared Carvalho is a Contributor from the United States and a longtime fan of video games, having started the hobby with a SNES when he was six and never looking back since. He often finds himself ...

New research using NASA’s James Webb Space Telescope examines the maximum sizes of gas giant exoplanets, measuring chemical compositions and formation processes in the HR 8799 system.

In a new study, a team of astrophysicists, including two researchers at CU Boulder, have discovered a small and rocky world orbiting a star far from Earth—similar to our own planet, perhaps, but much ...

Mercury is the smallest planet in our solar system. Explore its size, extreme temperatures, core structure, and comparison with Pluto.

(AP) Our Milky Way is home to at least 17 billion planets that are similar in size to Earth, a new estimate suggests. That’s more than two Earth-size planets for every person on the globe. Just how ...

Jupiter is the largest planet in our Solar System and the fifth planet from the Sun. It is a massive gas giant made mostly of hydrogen and helium, the same elements that form stars.