NASA has a plan to combat rogue interstellar objects — and even a Planetary Defense Officer. Asteroid hunter, space scientist and writer Carrie Nugent reveals the array of tactics, from the tested to the far-out.

When Danish chef Thorsten Schmidt was asked to create a banquet in space, the endless tangle of restrictions helped him understand what really matters when it comes to food.

Should we be putting humans on Mars? A panel of space experts brings up the big questions we need to ask before we blast off.

Dark, isolated and largely unexplored, caves help astronauts prepare to do extra-terrestrial science

Hubble’s photo editor, Zoltan Levay, explains how he captures the invisible colors of the cosmos.

Pluto and its largest moon, Charon, could be considered a double planet. The balance point between them is between them in space, not within Pluto, so they're orbiting together around a point in space. This is our first mission to a double planet.

Planetary scientist Alan Stern explains why he believes new close-up pictures of Pluto prove beyond doubt that it should have its planet status reinstated. Also, close-up photographs of Pluto!

Author Stephen Petranek makes the case that humans will live on Mars in the not-too-distant future. He explains how and when this might happen — and what risks those who head there first might face.