Live coverage: Ariane 5 launch aborted

Ready to double its Florida launch capacity with two pads, SpaceX is preparing to loft a reused robotic cargo ship toward the International Space Station Wednesday with a recycled Falcon 9 booster, debuting a rebuilt launch complex knocked offline more than a year ago in a fiery blast during pre-flight testing.

A European Ariane 5 rocket sat poised for liftoff on a tropical launch pad Thursday nestled in the edge of the Amazon rainforest of South America.

The launch of an experimental fin-stabilized Japanese rocket with a shoebox-sized CubeSat was scrubbed Tuesday, pushing back a test flight to demonstrate how companies and institutions can inexpensively put small satellites in space.