Wednesday, August 13, 2014

Podcast: Hypervelocity Stars

Looking to hitch a ride out of the galaxy? You might want to buy a ticket on a hypervelocity star. These speedy sprites travel between one and two million miles per hour—fast enough to escape the gravitational pull of the entire galaxy. All stars in the Milky Way, including our sun, are moving: they orbit around the center of the galaxy. But those stars are going nowhere near the speed of hypervelocity stars. How do they get going so fast? A massive black hole, of course. Listen to the podcast to hear more about the science, the history and the future of these fast moving fireballs.

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