There goes the sun

With the recent reports that the sun has gone dormant with respect to sunspots, and with reports that other planets seem to be showing signs of cooling, it would be nice if we could come up with a space-based temperature measurement.

My guess is, that this would be easy.

I would think the Hubble, telecommunications satellites, or any number of artificial satellites probably have thermocouples on board to determine whether the thermal-shielding is working properly. I would think the Hubble's solar panels would have some sort of a heat tracking system--heck, what is a space-based solar panel but one big solar-output measuring device.

So, shouldn't we be able to assemble at least 18 years worth of solar output statistics based on such data? It would be interesting to see the variations and get a measurement that isn't tainted by light scattering in the atmosphere, greenhouse gases, feedback loops, or environmental gasbags.

Addendum by Steve: This is already done, I believe, by NASA.
"Our friend the sun. The sun is by far the hottiest planet in the solar system and would burn if...burn you...if you tried to eat it."
-Chris Peterson