Illustrator Nickolay Lamm, along with astrobiologist Marilyn Vogel, have transplanted New York City to the various surfaces — and atmospheres — of our solar system's planets.

A new study suggests that Mars’s 3.5-mile high Mount Sharp formed as strong winds carried dust and sand into the crater in which it rests. If true, Gale Crater probably never contained a lake, which would totally suck, because that’s one of the main reasons why NASA sent Curiosity there in the first place.

As NASA's Curiosity rover scours the Martian surface in search of signs that Mars was once capable of fostering complex life, a team of researchers from the University of Poitiers, France, and Caltech have issued a paper that casts serious doubt on the notion that the planet was once habitable.

After nearly forty years of research, scientists have finally proven that plate tectonics exist on Mars. A recently published paper by An Yin in the journal Lithosophere reveals that the origin of Valles Marineris on Mars — the longest trough system in the solar system — was formed by rifting, strike-slip faulting,…

Saturn's largest moon, Titan, has a surface that doesn't make much sense. Images sent back by the cloud-piercing Cassini-Huygens spacecraft in 2004 showed a smooth surface that was barely touched by its extensive system of liquid methane rivers. And Titan has a strangely small number of impact craters from meteorites.

One would think that with barely 100th the atmosphere Earth has Mars would have pretty lame weather...if any. But it doesn't take much to whip up a good storm. Just look at the monster sand dunes that the winds on Mars manage to create. If they can do that, it's maybe less surprising that Mars' weather might be more…

We know that there are small deposits of water on the Martian surface, and there's evidence of plenty more water both below the surface and in the planet's past. Now we've gained a powerful tool for exploring Mars's watery history.

We now know two things about the Martian atmosphere's carbon dioxide: volcanic eruptions created the gas quite recently, and it probably reacted with liquid water. Taken together, these discoveries confirm water is still a major player in Martian geology.

The mountains on Saturn's moon Titan defy easy explanation, but readings from the Cassini probe offer a fascinating new possibility: Titan is slowly releasing heat and shriveling up, causing mountains to form on its surface like wrinkles on a raisin.

The Martian rover Opportunity has traversed the valley called Meridiani Planum, and convinced scientists that the region was once bathed in an acid lagoon. Now scientists believe the region was fed by non-acidic groundwaters destroyed by the drying planet.