November 16, 2004
The first European spacecraft sent to the moon has entered lunar orbit, the European Space Agency (ESA) said on Tuesday.
It has scientific experiments that it will conduct, but possibly the most important part is this:
SMART-1 has also been the test flight for a new solar-electric propulsion technology, a kind of solar-powered thruster that is ten times more efficient than the usual chemical systems employed when traveling in space.The so-called "ion" engine was tested over a long spiraling trip to the moon of more than 84 million km, a distance comparable to an interplanetary cruise, ESA said.
It does not burn fuel like chemical rockets do but instead converts sunlight into electricity via solar panels and uses it to electrically charge heavy gas atoms, which speed away from the spacecraft and thereby drive it forward.
Bravo, ESA!
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10:12 AM | category: Space Program
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China plans to launch more than 100 satellites before 2020 to watch every corner of the country, state-run China Central Television quoted a government official as saying Tuesday.
They're gonna watch over their own country. Which is pretty much what we do too. Check it out:
A "large surveying network" would be set up to monitor water reserves, forests, farmland, city construction and "various activities of society," a government official said without elaborating.
It's that "various activities of society" that makes one wonder though. Like Rocket Jones, the Chinese seem to have better success with the 'up' part of rocket launches than the 'down' part.
Last month, the retrievable chamber of China's 20th recoverable satellite returned to Earth with a bang, crashing through the roof of a house.
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04:56 AM | category: Space Program
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November 10, 2004
There's more:
And one last thing:
That sounds like a pretty ambitious set of requirements, and they're specifically crafted to encourage a private-sector replacement for Russia's Soyuz spacecraft. At this time, the US is dependent on Soyuz for transport to and from the International Space Station.
Bigelow Aerospace is putting up the entire amount of the prize after NASA was unable (for various reasons) to pony up half. I originally talked about inflatables in space here first, then here. Follow those links for even more links and information.
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06:07 AM | category: Space Program
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November 05, 2004
Spirit, having trekked nearly two miles across the flat terrain of the vast Gusev Crater region where it set down, is zigzagging up the rugged Columbia Hills and is now nearly 200 feet above the surrounding plain.
Meanwhile, back at the ranch, er, on the other side of the planet:
Opportunity is nearing the end of its exploration of stadium-size Endurance Crater in the Meridiani Planum region and may claw its way over the rim.
These guys have solar arrays used to generate electricity and have been working on reduced power during the Martian winter. As time goes by, the arrays have been covered by a light coating of dust, which has reduced their efficiency. But Opportunity recently received an unexpected power boost.
"One favorite [theory] is that a dust devil happened to pick the vehicle to go through and go over the surface of it and clean it off a little bit," Erickson said.
I'd rather imagine that the Martian equivalent of Gomer Pyle wandered by and did the windows. Surprise. Surprise. Surprise!
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05:27 AM | category: Space Program
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