The latest news on Mars
Buzz Aldrin says the 'planetary defense exercise' is a waste of time.
The billionaire businessman plans to launch his Inspiration Mars trip in 2018.
NASA scientist Roger Wiens talks about the role Mars Rover Curiosity plays in the future of space exploration.
Dutch nonprofit plans to fly four astronauts to Mars in 2023.
NASA has become too risk-averse, critics say.
Agency suggests some areas of Mars were very hospitable for life.
LOS ANGELES (AP) — Curiosity hunkered down after the sun unleashed a blast that raced toward Mars.
Biggest hurdle will be funding, but flyby mission is technically feasible.
Seventy-five percent of respondents say NASA budget should be doubled in order to put a person on Mars.
The river is nearly 1,000 miles long and almost 1,000 feet deep at points.