Visualizing the solar system in its totality requires one to conjure a lot of spinning bodies moving in synchrony. But getting a sense of those objects’ scale is just as important for developing a ...

The universe is filled with enormous planets that make the Earth seem like nothing more than a speck of sand on a mountain. We don’t even need to leave our solar system in order to find the behemoths ...

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 ...