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| | | | | | | | | A solar eruption | |
The stormy Sun
Although 150 million kilometres away, the Sun is the most important feature of the Earth’s environment - the source of warmth and the power supply of green plants. ESA has taken an important lead in solar science, with six spacecraft built in Europe for joint missions with NASA. Ulysses (1990), SOHO (1991) and Cluster (4 satellites, 2000) all make unique contributions to global efforts to understand the causes and consequences of the great storms that rack the Sun and disturb the Earth’s space environment. They threaten harm to astronauts, spacecraft, power supplies and computers, and affect the Earth’s climate too.
Last update: 12 March 2002 | |
| | Related links ESA's Ulysses science websiteESA's SOHO science websiteCluster homepageSpace weather
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