10 free iPhone apps for spectacular stargazing

There are tons of iPhone apps that can help everyone who has a little (or a lot) of astronomer blood in them watch the sky with more authority.

NASA brings chemical sensor to iPhone

NASA's Ames Research Center has developed what the space agency calls a proof of concept of new technology that would bring compact, low-cost, low-power, high-speed nanosensor-based chemical sensing capabilities to cell phones.