The Sun’s 11-year cycle
This video from the ESA/NASA SOHO (Solar and Heliospheric Observatory) satellite shows the Sun’s 11-year cycle of activity. Astronomers have recently observed a change in the atmosphere of exoplanet HD 189733b, which was observed losing over 1000 tonnes of gas per second. While they believe that a powerful stellar flare is the most likely explanation for the atmospheric evaporation, a longer, slower variation in stellar activity, similar to the 11-year sunspot cycle could also explain this.
Credit:SOHO/EIT (ESA & NASA)
About the Video
Id: | heic1209i |
Release date: | 28 June 2012, 15:00 |
Related releases: | heic1209 |
Duration: | 53 s |
Frame rate: | 30 fps |
About the Object
Name: | Sun |
Category: | HD Solar System |
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