When a signal bounces back from the GPS-enabled device on the Earth, it can tell exactly how far away that device is.

FORBES: GPS Navigation From The Wrist

But as valuations of Internet, software and hardware companies come down to earth, and medical device and drug companies continue to steadily get bought or go public, more health care investors are clawing their way onto the list.

FORBES

While that's not exactly been the case with Apple and a video-enabled iPod, the company's derision of portable video has certainly signaled that we shouldn't expect such a device before, say, the next major Earth-smashing asteroid threat.

ENGADGET: Switched On: The iPod Photo's slippery slope towards video

By measuring the amount of static acceleration due to gravity, the chip knows the angle a device is being tilted at with respect to the earth.

BBC: NEWS | Technology | Motion-sensitive laptop developed

The device inside the Hubble that transmits data from space to earth wasn't working, so a new part had to be ordered and astronauts needed to be trained to install it.

FORBES: NASA Shuttle Exclusive

Here on Earth, IHMC is interested in developing and using X1 as an assistive walking device.

ENGADGET: NASA and IHMC building X1 exoskeleton to give us a lift, keep us fit in space and on Earth

Since Earth is not borrowing money from Mars, does the debt explosion really matter, or is it just an accounting device?

ECONOMIST: Repent at leisure