What travels around the earth without using any fuel?!

Question: What travels around the earth without using any fuel!?
Answers:

The moon!.Www@Enter-QA@Com

the freaking moon cloud postage stamp and the sky!.Www@Enter-QA@Com

a guy on a bikeWww@Enter-QA@Com

the moonWww@Enter-QA@Com

the moon
Www@Enter-QA@Com

a birdWww@Enter-QA@Com

moon
?Www@Enter-QA@Com

a lieWww@Enter-QA@Com

moon or clouds or fart/pedal proppelled flying machineWww@Enter-QA@Com

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