NASA needs new 'breakthrough,' says Obama

NASA needs new technology breakthroughs to revitalize its mission to explore the universe, President Barack Obama said Wednesday as the shuttle Atlantis was preparing for its final mission.

Researchers complete 520-day mock mission to Mars

(AP) -- Pale but smiling, an international crew of researchers on Friday walked out of a set of windowless modules after a grueling 520-day simulation of a flight to Mars.

Aviation faces challenge to reduce pollution

Aviation has boomed in the past decades, with low-cost airlines helping make travel affordable to more people, but the industry faces a major challenge to play its part in cutting emissions responsible for global warming.

Technology tackles space junk

Orbital debris can cause problems for space travel and satellites, so scientists have banded together to come up with innovative solutions, from laser cannons to proactive removal.

Probe of US spaceship crash may take a 'year' (Update)

Authorities who Saturday carried out their first full day of investigation into a US spacecraft crash that killed one pilot and seriously injured another said probing the incident could take a year.

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