Tropical storm may delay 1st SpaceX crew's return to Earth

Tropical weather barreling toward Florida could delay this weekend’s planned return of the first SpaceX crew.On Wednesday, SpaceX and NASA cleared the Dragon crew capsule to depart the International Space Station and head home after a two-month flight.Because NASA test pilots Doug Hurley and Bob Behnken will aim for the Atlantic or Gulf of Mexico just off Florida's coast, the wind and waves must be relatively calm.