The ESA/NASA joint mission responsible for the wildly successful Ulysses probe has been extended until 2008. The fastest probe ever built, it has been in a polar orbit around the sun for 15 years. That means the probe has had a chance to witness most of the Sun's 22 year cycle of activity.
Most of us think of the Sun as a big burning ball of gas, but in reality it is a much more complex, mysterious thing than that. Some scientists are right now debating whether the Sun has a solid surface. While many others consider that very notion utterly ridiculous.
For those of you completely in the dark about the composition of the sun, check this out. Just be sure to take everything you read with a grain of salt. After all, Ulysses has been studying the Sun for 15 years and it's barely scratched the surface...
NASA eyes establishing orbiting lunar outpost
12 years ago
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