Life on Mars has yet to be found, but we're already making plans to protect it from us—and us from it.

SPACE
The winner of the Space Poop Challenge will receive a $30,000 prize.
Project Blue is an effort by a group of scientists, engineers, and space organizations to launch a small telescope into space with the singular goal of directly imaging in visible light (i.e. the light we see with our own eyes) an Earth-like planet.
Yes, you heard us right.
The Space Weather Prediction Center can give a heads-up of about 45 minutes that a solar storm will affect some specific place on Earth.
The unusual decision to photograph nothing in particular revealed the early universe in all its glory.
A Kickstarter is turning the only government-authorized alien playlist in history into a vinyl box set.
To prepare for life in zero gravity, astronauts make sure their arms and hands are in tip-top shape.
This one is for our readers on the other side of the globe from our main office.
Can you have a planet that isn't round? And what do potatoes have to do with it?
'Freddiemercury' is leaping through the sky 200 million miles from Earth.
Science just published six significant papers about the dwarf planet Ceres. We pored over them to see what has planetary scientists so excited.
Proxima b might be able to support life.
More than 850 articles have been uploaded so far, and more are on the way.
Ten-trillionths of your tan, to be exact—so no need to break out the SPF 70.
Taber MacCallum and Jane Poynter witnessed the most affecting solar eclipse of their lives in 1992. That's because as they watched the Sun disappear behind the Moon’s shadow, they were also watching their oxygen supplies slipping away.
One of Jupiter's most baffling mysteries might be solved at last.
Earlier this week, the European Space Agency switched off radio communications with the plucky spacecraft, whose landing on the comet 67P/Churyumov-Gerasimenko captivated the world.
The Viking I lander touched down on Mars on July 20, 1976. It was just the first of many NASA missions to the red planet.