twocycles

We've had a few busy days recently, so it's been harder than usual to keep you all furnished with new reading material.

This evening, as the Earth horizon slips over the sun and darkness and cold descend, I am a bit more tired than usual. Today was the first day back on the bicycle, winter cycling to and from my workplace. In only a few weeks, my endurance levels have fallen considerably. Despite the soreness, it feels good to be back. Even the human astronauts use cycling to stay fit (albeit stationary). Have a look at this interweb strand:

http://www.space.com/6464-astronauts-patch-space-bicycle.html

Here is a little old-time tune. Maybe Martian music did or would sound something like this?