Since Viking 1 landed in 1976, humans have studied Mars from afar, relying on rovers and orbiters to analyze the planet. But ...

The best reason to send humans to Mars isn’t for guts or glory—or the construction of colonies to safeguard against existential Earth-bound risks. Instead it’s to answer a single, simple question: Is ...

Today, Mars is known as the red planet, for its rust-colored desert landscape. Once upon a time, Mars was a very different ...

The idea of a human mission to explore Mars has been studied repeatedly over the past 75 years. More than 1,000 piloted Mars mission studies were conducted inside and outside NASA between about 1950 ...