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Sometimes referred to as the Vomit Comet, the plane flies in large arcs.

Also, Gates goes for a ride in zero-G on the vomit comet.

Just when he thought a vomit comet was about to fly...he stopped moving.

Andrew Feinberg and Lindsay Rizzardi testing techniques on the “vomit comet.”

Rizzardi spent days on the plane known as the “vomit comet,” for instance, trying not to puke as she and her colleagues worked out how to prepare the blood samples during periods of weightlessness.