Associate Professor Alan Duffy from Swinburne University joins News Breakfast to explain why it's been so difficult to work out how quickly Saturn turns, and how it's finally been done.

He also covers the latest developments on how to keep astronauts healthy in zero gravity or reduced-gravity environments, the hunt for dark matter, and honours given to fellow scientists in the Australia Day Honours.

For more from ABC News, click here: http://www.abc.net.au/news/

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