What will the first humans on Mars eat? One scientist has the answer.

A mission to Mars could launch as early as the 2030s, taking a small crew of humans on a 5-year round trip to the red planet. One of the biggest questions about this mission isn't what kind of rocket ship we'll need, but how we'll feed people for five years in vacuum, and on an alien world. NASA senior research… » 9/01/11 4:30pm 9/01/11 4:30pm

Four Reasons Not to Give Up on Interstellar Travel

Click to view » 8/22/08 7:00am 8/22/08 7:00amAccording to the scientists who attended this year's Joint Propulsion Conference in Hartford, Connecticut, humans may never be able to achieve interstellar travel. Aerospace experts from NASA to MIT claim that finding the amount of energy and time we'd need to cross the huge distances involved is out of…