It may be several weeks before they can analyze the powder using the craft's onboard chemical test-kit.

WSJ: Rover on Mars Extracts First Rock-Core Sample

It'll also find time for its studies, beaming VGA images snapped with an onboard camera back to Earth, to test a high-speed data transmitter.

ENGADGET: Japan's LED-stacked cubesat will burn Morse code into the heavens

A. In more than a decade of test-driving cars with onboard computers that calculate fuel economy, I have yet to find one that was not accurate.

WSJ: Car Advice: Is Going Diesel Worth It?��Me & My Car