The latest news on space
Buzz Aldrin says the 'planetary defense exercise' is a waste of time.
The billionaire businessman plans to launch his Inspiration Mars trip in 2018.
The mission is designed to test NASA's spacecraft, with side benefit of creating an asteroid defense capability.
If antimatter resists gravity, many of physics' biggest questions would be answered.
The hurricane has wind speeds of up to 330 mph and is about 20 times larger than most hurricanes on Earth.
Richard Branson's company plans to begin flying tourists to space later this year.
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.
The pair of planets is about 1,000 light years away, researchers say.
The flare is still much weaker than some of 2012’s events.