This is a sequence of images of the supergiant star V838 Monocerotis that had a stellar outburst in January 2002. The light bounces off the surrounding layers of dust as it travels through space. The light that travels to us on a direct path arrives first and the reflected light further way from the star reaches us later. It's like turning on a giant light bulb in the middle of space for a certain period of time in order to reveal information about the structure of these shells. This phenomenon is called a light echo.


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V838 Monocerotis - Light Echo of an Erupting Star
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Published by Published or last modified on 2013-09-09