During its 4.5-billion-year life span, Earth’s been hit by countless asteroids. (Despite Jupiter’s noble attempts at defending it.) But while it’s easy to imagine the damage they’ve done, just how big ...

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 ...

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 ...

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 ...

There’s something about comparing the sizes of unthinkably large objects that’s endlessly intriguing. Looking at a comparison of all the various sizes of stars in the universe, for example, makes for ...

The Earth-size planet HD 137010 b has a ‘50% chance of residing in the habitable zone’ of its sun-like star, scientists say ...

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 many are ...