The Sun’s 11-year cycle

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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:53s

About the Object

Name:Sun
Type:• X - Solar System Images/Videos
• X - HD Videos

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