"We are observing the build-up of one the largest structures in the universe, a city of galaxies in construction." ...

You can vote on one of seven possible names for a quasi-moon of Earth and, unfortunately, Moony McMoonface isn't on the list.

"If trying to explain how three super puffs formed in one system wasn’t challenging enough, now we have to explain a fourth ...

National Geographic’s photography community is now on Instagram at @NatGeoYourShot. Please follow us there for the latest photos from the community and tag your photos #YourShotPhotographer for ...

All the Toon characters on this list have either appeared physically or in another form in Who Framed Roger Rabbit. These characters had either appeared in animated features or cartoon shorts made by ...