This episode of the Hubblecast explores striking new Hubble observations of a variable star known as RS Puppis. This star is growing brighter and dimmer as it pulsates over a period of five weeks. These pulsations have created a stunning example of a phenomenon known as a light echo, where light appears to reverberate through the foggy environment around the star.

More information and download options:
http://www.spacetelescope.org/videos/heic1323b/

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Credit: ESA/Hubble

Directed by: Nicola Guttridge
Visual design and editing: Martin Kornmesser
Written by: Nicola Guttridge & Georgia Bladon
Presented by: Joe Liske (Dr J)
Narration: Sara Mendes da Costa
Images: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)-Hubble/Europe Collaboration
Acknowledgment: H. Bond (STScI and Penn State University)
View of Milky Way: Nick Risinger (skysurvey.org).
Videos: ESA/Hubble (M. Kornmesser, L. Calçada), G. Bacon (STScI)
Music: Zero Project
Web and technical support: Mathias Andre and Raquel Yumi Shida
Cinematography: Peter Rixner (perix-media-gmbh.de)
Executive producer: Lars Lindberg Christensen