How does an airbag work?
The private space firm has successfully launched and landed an unmanned Falcon 9 rocket from an air base in California. The rocket sent 10 communications satellites into orbit.
After a thunderous explosion rocked SpaceX's main launch pad in Florida, destroying a rocket and a satellite Facebook was going to use to beam Internet to parts of Africa, companies are counting the cost.
An explosive blaze at a Ukrainian munitions depot has been brought under control, according to Prime Minister Volodymyr Groysman. He blamed "external factors" for the fire. Authorities evacuated 24,000 residents.
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