As Mars' once-plentiful lakes dried up, the remaining water sources likely became very salty, possibly offering a haven for ...

Some of the unusual rocks carry stories about water on Mars. One has hints of long-gone microbes. All tell of a dynamic, complex planet.

The Curiosity rover detected the largest organic molecules to date on Mars, which may be fragments of fatty acids, or some of ...

Trump aims to send a crew to Mars by the end of his term, which Musk calls 'doable.' Astronauts question the time frame but ...

But thanks to Curiosity, we have a pretty good idea of what we'll find. Watch Destination: Mars on The Nature of Things.

Mars, the fourth planet from the sun, is a dry, rocky world. Its famous red color has earned it the nickname the Red Planet. Mars has fascinated people throughout history, and today, it is one of ...

Ghost rivers, hidden lakes: The long search for water on Mars Martian lake beds and deltas reveal the Red Planet’s watery past. But many puzzles remain, scientist Bruce Jakosky says.

We're back! A long-time reader and subscriber recently mentioned in the Ars Forums that they "kind of" missed the Daily ...

Thousands of mysterious quakes on Mars that only happen during summer ... The clustered timing is “the weirdest thing about these quakes”, said Stähler. On Earth, the only mechanism we ...

In 2015, NASA's Curiosity rover spotted what appeared to be a wooden spoon, floating in midair with a shadow on the ground beneath it. It was, of course, an optical illusion; the spoon is simply a ...