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Hubble time lapse of star burst shell over 4 years (Video)

The unusual variable star V838 Monocerotis (V838 Mon) continues to puzzle astronomers. This previously inconspicuous star underwent an outburst early in 2002, during which it temporarily increased in brightness to become 600,000 times more luminous than our Sun. Light from this sudden eruption is illuminating the interstellar dust surrounding the star, producing the most spectacular “light echo” in the history of astronomy.

This video morphs images of the light echo from the Hubble taken at multiple times between 2002 and 2006.

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