You talked about Viking being the most complex laboratory experiment ever conducted.

NPR: Revisiting the Viking Missions to Mars

Flying on automatic pilot, the one-ton Curiosity the largest and most complex mobile laboratory ever landed on another planet touched down perfectly at about 1:32 a.m.

WSJ: NASA's Curiosity Rover Lands on Mars

The first, scheduled for Saturday, will add a platform to the Japanese laboratory complex, Kibo, which can be used for experiments that require materials to be exposed to the harsh environment of space.

BBC: Shuttle crew welcomed aboard ISS

NASA's Jet Propulsion Laboratory pointed out, however, there is a complex trade-off to be made when deciding what to do about an asteroid that may be on a collision course with Earth.

ECONOMIST: The American Association for the Advancement of Science

What makes aircraft fatigue such an dark art is that, unlike standard tests done in a laboratory, an aircraft's structure has to endure a complex, mostly random, set of static as well as cyclical stresses when in service.

ECONOMIST: Aircraft fatigue