10 Year Sun Cycle As Seen From Space

10 Year Sun Cycle As Seen From Space

10 year Solar cycle from space


The ESA have released the above picture that shows how our Sun has changed over the last 10 years. The Sun goes through cycles of activity every 11 years or so. The Sun we see here on Earth doesn’t appear to change much year from year. This is because the Sun’s brightness or luminosity doesn’t change much in the visible light spectrum. However, if you look at the Sun in Ultraviolet and X-ray wavelengths the Sun has dramatic changes in activity thought to be linked to the magnetic field. The picture is taken from SOHO, a spacecraft that has monitored the Sun’s activity for the last 10 years in the Ultraviolet and X-ray wavelengths. The bright areas show where the Sun’s gas has reached temperatures of upto 2 million degrees Celsius.


To learn more:


http://www.esa.int/spaceinimages/Images/2014/03/Solar_cycle


Image credit: SOHO (ESA & NASA)

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