On Mon, 21 Oct 2013 johndom@xxxxxxxxx wrote: > Is the safe Planck telescope retirement an heliocentric orbit? I believe that was the plan, yes. It's the easiest thing you can do, starting from Earth's L1 or L2, to take a spacecraft well clear of Earth. Henry Spencer henry@xxxxxxxxxxxxxxx (hspencer@xxxxxxxxxxxxx) (regexpguy@xxxxxxxxx)