Featured in Mars
Peer inside the solar system’s largest canyon
Valles Marineris is bigger than the Grand Canyon many times over.
SpaceX’s Starship flies, belly flops, and bursts into flames
Elon Musk’s one rocket to rule them all put on a dramatic show yesterday.
The most life-friendly places on ancient Mars were deep below its surface
Subglacial lakes may have been the most hospitable place for life.
Mars died billions of years ago, and its guts are still spilling into space
The planet is still drying out today. And faster than expected.
Clumps of bacteria could spread life between planets
A unique trick could let microbes zip from Earth to Mars, for example, and survive the trek.
Ancient valleys may hold clues to past life on Mars
Understanding whether the Red Planet’s past was warm and wet or cold and icy can offer insights about whether it was ever habitable.
Watch NASA launch its next rover to Mars
It's the third Mars-bound launch this summer—China and the UAE sent probes earlier in July.
For astronauts in space, play is a way to stay safe
Keeping shuttle residents entertained is a serious business.
The next era of space travel should include nuclear-powered rockets
There have been eight US space launches carrying nuclear reactors in the last 40 years.
Mud volcanoes on Mars hint at ancient water reservoirs
What we thought was lava might be mud instead.