After almost five weeks at the International Space Station, the unpiloted U.S. SpaceX Dragon cargo spacecraft departed the ISS on May 21 to begin the journey back to Earth. Dragon brought back with it, more than 3,000 pounds of experiments and cargo for researchers and station program personnel.
SpaceX has narrowly failed in its latest bid to retrieve a rocket booster intact, after a successful launch. The US rocket made it back to an ocean platform but landed "too hard" to survive, SpaceX CEO Elon Musk tweeted. Read more