A SpaceX Falcon 9 rocket successfully launched two satellites into orbit this morning, but the company failed to land the vehicle on a floating drone ship at sea afterward. Prior to the launch, the company said this landing would be difficult, since the rocket was going to a very high orbit known as geostationary transfer orbit, or GTO. Sending satellites to GTO uses up a lot of fuel during the initial ascent, leaving less fuel to pull off the vehicle's return.
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