A supposed square structure spotted on Mars sparked speculation about alien archeological sites on the red planet. It's a fun ...

The Sun sets differently on Mars. Part of that is due to its distance from the star (an average of 142 million miles versus ...

NASA sent a valentine to space lovers on social media this week posting images of heart shapes found on Mars. The pictures ...

Elon Musk's vision for a Mars colony has sparked debate after a futuristic video showcasing a Martian cityscape went viral, ...

The rover's 26th sample, known as "Silver Mountain," has textures "unlike anything we've seen before," NASA says.

NASA still views the moon as a stepping stone to Mars, even though Elon Musk has dismissed Earth's nearest neighbor as "a ...

Why it's so special: These odd, fan-like features on the surface of Mars are geysers of gas and dust near the planet's south ...

Like a celestial parade across the cosmos, five bright planets are lighting up the night sky and visible with the naked eye ...

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

Russia's state-owned Rosatom announced a prototype plasma engine which could speed up travel to other planets.

Proponents of going to Mars see peril and opportunity in Elon Musk's close relationship with Trump. Experts say just getting ...