Herschel Space Telescope - end of mission

[lacad01]

Interesting article on the end of the Herschel space telescope as it's liquid helium supply has run out:

http://earthsky.org/space/herschel-telescope-goes-blind-ends-mission

[coldlegs]

I will never understand why they spend billions on making these "NON RE_FILLABLE" telescopes!!! Why can't they be refilled by small supply drones?
Just don't get why they can't figure out how to keep them going!

Cheers
Stephen