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

NASA is developing a groundbreaking spacecraft concept designed to revolutionize Mars travel. The ambitious plan involves ...

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

Engineers developed an engine prototype which could reach unprecedented speeds, cutting down interplanetary travel time.

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

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

New images captured by NASA's Curiosity rover show colorful clouds in the sky over Mars. The images were captured by the rover's Mastcam, which NASA's Jet Propulsion Laboratory compared to the rover's ...

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

Trump’s pick to lead NASA, billionaire Jared Isaacman, has not been approved yet, so no official changes in the plan have ...

You might think sex in space would be an out-of-this-world experience — but low-gravity intimacy may not be as much of a high as it sounds.