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NASA

NASA To Cryogenically Freeze Satellite Mirrors 47

Posted by Soulskill
from the ain't-it-cool dept.
coondoggie writes "NASA said it will soon move some of the larger (46 lb) mirror segments of its future James Webb Space Telescope into a cryogenic test facility that will freeze the mirrors to -414 degrees Fahrenheit (~25 K). Specifically, NASA will freeze six of the 18 Webb telescope mirror segments at the X-ray and Cryogenic Facility, or XRCF, at NASA's Marshall Space Flight Center in Huntsville, Alabama, in a test to ensure the critical mirrors can withstand the extreme space environments. All 18 segments will eventually be tested at the site. The test chamber takes approximately five days to cool a mirror segment to cryogenic temperatures."

Comment: Re:Chicken Little (Score 4, Informative) 118

by jericho4.0 (#30532690) Attached to: Nuclear Reactors As Art
There are a lot of ways to make your point on the internet, and one of them is to not talk about shit you don't know. It's Ad hominem. And yes,seriously, that's a wiki link. If you would deign to look at it you might learn something, like the fact that dakameleon didn't commit an ad hominem. Saying India won't develop nuclear weapons when they already have makes you look like an idiot, and I thought dakameleon let you off lightly.

Comment: Re:Funny (Score 2, Insightful) 232

by Tim Doran (#28103407) Attached to: Canada's Conference Board Found Plagiarizing Copyright Report

"Socialist pablum?" Dude, put the Fox News down before you hurt yourself.

Also, "bare arms" = short sleeves. I am exercising my right to bare arms at this very moment. You probably meant "bear arms", aka "carry arms". While it's not in the Canadian constitution, there are plenty of guns in Canada and you know it.

While we're at it, the Canadian Charter of Rights and Freedoms most certainly includes freedom of speech and religion. And I personally criticize the shit out of my municipal, provincial and federal governments on a regular (and public) basis. And I do so safe in the knowledge that they can't do a THING to me in retaliation. Jesus, did you sleep through grade 10 civics?

All things considered (seriously, you plan to "blow the head off some daft politician"?!?), I'd encourage you to apply for US citizenship as soon as you're able. I hear the Appalachians are lovely this time of year.

"Only the hypocrite is really rotten to the core." -- Hannah Arendt.

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