Geostationary Satellites

What happens if you take a time-lapse "star trail" image of the heavens pointed at the celestial equator? You may see some objects that do not move with the rest of the skies. These are man-made satellites in geosynchronous orbit. (Via today's Earth Science Picture of the Day.)

Look, there is the Chinese spy satelite! Spying on The Cellar.

It looks like it is, or will be soon, a Newton's Cradle for a humongous race of ET's.

cosmic knock-hockey!