16/12/2015 5:53 PM AEDT | Updated 15/07/2016 12:51 PM AEST

Space Water, Killer Ham And Human Cloning: The Top 7 Science Discoveries Of 2015

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It's been a big year for science so before we look to the skies for new year fireworks, let's gaze upon the heavens and think about what we've learned about Mars, Pluto and ham.

Yes ham. Because pigs might fly before Australians accept processed meats will give you cancer.

Photo gallery The best science of 2015 See Gallery