Astronomers witness David versus Goliath fight between galaxies

Astronomers have witnessed, in the finest detail yet, a brutal David-vs-Goliath fight between two nearby galaxies that are tearing chunks from each other and flinging them into the gaseous Magellanic Stream, a cosmic river ...

Mountain streams emit a surprising amount of carbon dioxide

Mountains cover 25 percent of the Earth's surface, and the streams draining these mountains account for more than a third of the global runoff. But the role that mountain streams play in global carbon fluxes has not yet been ...

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