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Episode 72: A Light Echo

Play Dec 14•4:22

In 2002, an ordinary star in the night sky suddenly flashed to a brightness 600,000 times that of the Sun. No one knows why the eruption occurred, but since then, astronomers have monitored the star, known as V838 Monocerotis (V838 Mon), with the Hubble Space Telescope. An interesting nebula has formed and appears to be expanding around the central object. The nebula isn't really expanding thou...

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