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Recent Podcast
Light Beyond the Bulb: Over and Beyond the Rainbow
Light Beyond the Bulb: Over and Beyond the Rainbow
While scientists and philosophers have tried to figure out exactly what light is for millennia, it's only been in the past several hundred years or so that we've really started to figure it out. (2015-07-01)


N49 in 60 Seconds

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Narrator (Megan Watzke, CXC) This beautiful image shows N49, which is the aftermath of a supernova explosion in the Large Magellanic Cloud. Optical data from Hubble shows bright filaments where the shockwave generated by the supernova is interacting with the densest regions in nearby clouds of cool molecular gas. A new long observation from Chandra, equaling over 30 hours of observing time, reveals evidence for a bullet-shaped object that is being blown out of the debris field which is left over from an exploded star. This bullet, which is traveling some 5 million miles per hour, was ejected when the supernova went off and is rich in Silicon, Sulfur and Neon. The detection of this bullet shows that the explosion that destroyed the star was highly asymmetric , and gives clues to how some stars explode.

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