Europe Sets Sights On Asteroid Tracking Radars

The ESA radar systems are for tracking space debris orbiting the Earth not for tracking asteroids.

Well unless the asteroids were captured by earth's gravity.:)

But yeah, detecting radio signals broadcast from earth then bounced off an asteroid would be redonculously hard. It's hard enough using the sun as our illumination.

Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/WIKurY_O-7g/europe-sets-sights-on-asteroid-tracking-radars

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