Sunrise on HD 189733b (artist’s impression)

This artist’s impression shows a viewpoint rising up through the atmosphere of exoplanet HD 189733b during sunrise. The colours of the blue sky and reddish star are caused by Rayleigh scattering, the same effect that produces blue skies and red sunsets on Earth. This effect is produced by haze in the upper atmosphere scattering blue light more efficiently than red. The colours in the video are derived from estimates by Frederic Pont (Exeter University, UK) and Alain Lecavelier des Etangs (IAP/CNRS, France), based on Hubble observations of HD 189733b’s atmosphere.


NASA, ESA, M. Kornmesser, F. Pont (Exeter University, UK), A. Lecavelier des Etangs (IAP/CNRS/UPMC, France)

About the Video

Release date:28 June 2012, 15:00
Related releases:heic1209
Duration:15 s
Frame rate:30 fps

About the Object



r.titleLarge QT
1.8 MB


r.titleVideo Podcast
1.2 MB
r.titleMedium MPEG-1
6.0 MB
r.titleMedium Flash
1.8 MB


r.titleSmall Flash
738.6 KB
r.titleSmall QT
527.6 KB

For Broadcasters

r.titleBroadcast SD
76.4 MB

Also see our

Privacy policy Accelerated by CDN77