A couple of space and sci-fi derived misconceptions:

• An orbiting satellite needs propulsion and that orbiting is different from free fall.
• You can actually see a laser! I've seen this in my experimental physics class a few years back, before keychain lasers were common.

A couple of space and sci-fi derived misconceptions:

• An orbiting satellite needs propulsion and that orbiting is different from free fall.
• You can actually see a laser beam in free space! I've seen this in my experimental physics class a few years back, before keychain lasers were common.