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.
SOHO/EIT (ESA & NASA)
About the Video
|Release date:||28 June 2012, 15:00|
About the Object
|Type:||• X - Solar System Images/Videos|
• X - HD Videos