On 18 Jul 2005 11:02:43 -0400, wrote:

Wes Stewart wrote:

...The clear night sky has a black body temperature very near
absolute zero (0 Kelvin)...

It's not that cold.

You are correct of course. My radio frequency background (no pun
intended) was in play. Even there, there are absorption bands but the
quiet sky (away from radio sources) is very cold.