In a wide-ranging interview with PopularScience.com, Aldrin talks about a mission to Mars, 34 years of sobriety and the future of American leadership in space.
Stay tuned for details next week about the proposed launch in 2018.
NASA already has an orbiter for 2013 and a lander for 2016; now it has another rover in the works, too.
Mars planners suggest a robot-to-human hand-off in space.
The future is cloudy
Nautilus includes a centrifuge and inflatable parts
Survey of scientists compiles astronomical wishlist for the next decade
But oil is still part of the mix
The NASA/ESA LISA project aims to measure gravitational waves with giant lasers and free-falling cubes of gold
Grocery stores may look a little different.
Leading scientists present their 2020 visions
PopSci's vision for making travel faster, greener, and more fun
Steven Chu, the new U.S. secretary of energy, is a Nobel-winning physicist and an unabashed advocate of fighting climate change. But can he negotiate the political realities of transforming the energy economy?
Conceptual shelters that will protect us all from the perils of our rapidly changing environment: rising waters, extreme heat, rampant pollution and overpopulation