I'm a day early, and this is pretty lame, but here ya go:
The challenge is "Hot and Cold"
This is the sun, about 5 minutes ago. It's HOT today.
This is the moon, last night around 10:00. It's COLD on the moon.
Sorry, this isn't my best effort by a long shot. I'll do better next time, I'm sure! *blush* You can find much more interesting pictures at 2 Things Challenge hosted by Bobbie.