What you need to know about the Orion test flight
This is just the first step to getting humans to Mars
Here's what you need to know about the first-ever comet landing
These videos explaining the Rosetta mission are adorable and amazing.
Remote-controlled rover goes undercover as a baby penguin
The Emperor penguins accepted it as one of their own.
Don't worry, dog-sized spiders won't be taking over the world
If recent reports of giant spiders are freaking you out, we have some comforting news.