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That’s why the primary thrust of the current Constellation program, which plans to build a permanent settlement on the moon as a stepping stone to Mars, seemed good on the surface. Its ambition rivals the Apollo program, and its announcement came on the heels of Chinaâ?...
So why is space travel survivable at all? Because all speed is relative. A satellite orbiting Earth may be moving at 17,500 m.p.h., but so is every other object in the same orbital corridor. Relative to one another, they're standing still. If one happened to speed up to...
Even in the face of unprecedented challenges, NASCAR has plenty of horsepower. The sport is three years into an eight-year, $4.5 billion television deal with Fox, ESPN/ABC and TNT. The steady TV revenue can help cushion sponsorship losses. NASCAR is still the second highest rated regular-season sport on...
That's why NASA planetary scientist Christopher McKay, in an article in this week's Science, suggests the need for a stronger policy that ensures all exploration of Mars be "biologically reversible" - meaning we would be required to effectively wipe away our footprints and remove any possibility of contamination, by...
For now, it's not difficult to make sure that we avoid squashing new life as we search it out - although doing so could add considerable cost to any space mission. Probes like Phoenix can be more fully sterilized before launch, and debris from any unmanned craft could eventually be...