Right here in our solar system, researchers think these three small ocean-containing bodies — Saturn’s Enceladus and Titan and Jupiter’s Europa — just might harbor the conditions for existence to begin.

As new moon-going efforts ramp up, space explorers must remember to safeguard what humans left there previously — and also study it before it’s too late.

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.