Friday, February 04, 2005

Hubble spies changing light echo

The Hubble Telescope has imaged dramatic changes in the illumination of dust surrounding the star V838 Monocerotis (V838 Mon) over the last 3 years. The star brightened unexpectedly in 1992 and the burst of light has been illiminating an ever expanding region of the dust surrounding the star ever since. This effect is known as a light echo.

The animation below was produced by aligning the different images taken by Hubble since 1992.

Image Credit: NASA, ESA, and The Hubble Heritage Team (STScI/AURA)


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