View Full Version : Herschel and Planck Launch Succesfully

2009-May-14, 02:40 PM
The Herschel and Planck spacecraft successfully launched together Thursday from Europe’s Spaceport in Kourou, French Guiana. The Ariane V rocket performed flawlessly, with the rocket’s trajectory matching exactly the predicted flight path. The two spacecraft separated individually and in different directions from the launch vehicle, about four minutes apart, after spinning to [...]

More... (http://www.universetoday.com/2009/05/14/herschel-and-planck-launch-succesfully/)

2009-May-18, 08:47 PM
I'm curious. Liquid helium boils at ~ 4.2 Kelvin. The blip says the telescope will be colder than that...closer to 0 k. Are they magnetically cooling to get the last few degrees? pete

found it...evaporative magnetic cooling, neat...see:http://www.colorado.edu/physics/2000/bec/index.html