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	Podcast:		Science in Action
	Episode:		A Milky Way Merger
	Category:		Religion & Spirituality
	Duration:		00:26:28
	Publish Date:		2018-11-01 15:32:00
	Description:		A Milky Way Merger An impact with galaxy Enceladus, around 10 billion years ago filled, our home galaxy, the Milky Way’s inner surrounding halo with stars and made the galactic disk much thicker, and starrier than it ought to be. Sniffing the Atmosphere for Ozone-Depleting Gases Carbon tetrachloride is one of several man-made gases that contribute to the depletion of the ozone layer high in the atmosphere. Because of this, restrictions were introduced on the use of this gas under the Montreal Protocol. Concentrations of the gas in the atmosphere should be going down at a rapid rate. But it’s not, and a team of atmospheric scientists have been sniffing around to work out where the new sources of carbon tetrachloride are coming from and it’s China. AutoNauts in Antarctica Reporter Hannah Fisher goes to see an unmanned automated vessel, called the AutoNaut being tested in icy conditions. The remotely-operated vessel will be used to explore uncharted waters around Antarctic ice sheets to collect data on ice-melt and sea-level rise. But first it needs to have a coating that won’t ice up. Picture, Illustration shows a stage in the predicted merger between our Milky Way galaxy Credit: Nasa Presenter: Roland Pease Producer: Fiona Roberts
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