The astronauts made a pizza in zero gravity aboard space station

They used ingredients that would stick to the pizza crust, which itself needs to be fairly crumb-free so as not to send food bits showering into the electronics.

Italian astronaut Paolo Nespoli has been on the space station orbiting Earth for more than 100 days, and was getting homesick.

NASA's ISS Program manager Kirk Shireman came through for the crew, sending up the pizza components with a recent supply ship.

Included on the craft were prepackaged crusts, a squeeze bottle full of pizza sauce, spreadable cheese and toppings including olives and pepperoni.

He said: "When you really, really miss pizza..."

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You can't exactly order pizza in orbit - so the crew of the International Space Station made some from scratch.

The team analyzed bacteria found on 15 locations on the ISS, as well as swabs from astronauts, and compared them to samples from the Human Microbiome Project and homes on Earth. But space pizza? Well, just see for yourself.

In the footage published on Twitter, the astronauts can be seen sticking the ingredients on before spinning them as they float around the cabin. The crew, he said in a tweet, "had a blast channeling our inner chef by building tasty pizzas for movie night".

The International Space Station has been colonized by thousands of microbe species, according to a new study in the journal PeerJ.

The community of micro-organisms living on board the space lab is remarkably like that in people's homes, the research also found.

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