If an aircraft flies with it's belly facing the earth (or "Blue side up"), the how can it fly around the world without flying inverted?
closed as off-topic by Pondlife, DeltaLima, Dan Pichelman, Ron Beyer, fooot♦ Jul 13 '16 at 15:51
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "This question does not appear to be about aviation, within the scope defined in the help center." – DeltaLima, Dan Pichelman, Ron Beyer