Earth is home to some truly bizarre and breathtaking landscapes — here are 20 that look straight out of an alien world.

Rivers began pumping weathered material into the sea about a billion years after Earth formed, suggesting continents may have gotten an early start.

"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was ...

Scientists have discovered ancient water, exotic salts, and the building blocks of life in asteroid Bennu, supporting the theory that asteroids may have seeded life on Earth ...

Though it's a cold, dead planet, Mars still has its own natural beauty about it. This image shows us something we'll never ...

The Chinese Mars rover named Zhurong landed on the red planet on May 14, 2021 and accomplished a lot in its year of study.

The 3.7-billion-year-old formations in the planet's Gale Crater suggest the presence of long-gone bodies of liquid water, with no ice covering the surface ...

The car-sized Curiosity rover has spotted evidence of once quite hospitable environs on Mars.

Research suggests that an ancient shoreline helped to sculpt the drop between Mars' southern and northern hemispheres.

The Sea Dragon, a 490-foot behemoth, would have been built of inexpensive steel and launched from the sea, minimizing ground infrastructure.

Names associated with the ocean (or water in general) hold a special place in my heart. One of my friends who lives with his family out in California lives near the ocean, and all of them have names ...

Did you know that Mars at opposition is a special time when Earth and Mars are closest? This happens when Earth passes directly between Mars and the Sun. At this point, Mars appears larger and ...