Gaffney : I'd like to clarify what you're in favor of, John, because on one hand, it seems as though you have made a pretty eloquent case for why an anti-satellite arms control regime would be an exercise in futility.

CENTERFORSECURITYPOLICY: Center For Security Policy

It is made by combining a sequence of radar images acquired by an orbiting satellite "before" and "after" a quake.

BBC: Christchurch quake mapped from space

The famous face was used in an experiment and carried in a laser beam to a man-made satellite orbiting the moon, NASA said Thursday.

CNN: SHARE THIS

The NASA scientist said the odds of an operational satellite being disabled by space debris remain quite small, though he points out that two have been lost after being hit by man-made debris -- a French satellite in 1996 and an American craft in 2009.

CNN: Space harpoon plan to nail orbital garbage

For those frustrated by the slowness of the internet and the lack of broadband access, a company called Espresso sends a wide range of material to schools by satellite, which is then made available on an intranet.

BBC: Future imperfect?