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Helios Observatory
Located in European Space Astronomy Center (ESAC)

Although the sun is only an insignificant star in our galaxy, it is the dominant object in our solar system and essential for life on Earth. A variation of only a few percent of its energy output would cause disastrous climate changes on Earth. Therefore, it is very important to observe and study the Sun and try to understand how it works.

Sunspot Counting
Solar Rotation
The distance Sun-Earth
Observatory coordinates: 3°57'W 40°26'N (664 metres high)

Helios observatory webcams