Space

Spacefaring Stamp Sets World Record

The "Pluto: Not Yet Explored" stamp has traveled farther than any other stamp, hitching a ride on the New Horizons space probe, which accomplished its closest flyby of the dwarf planet last summer.

'Star Trackers' Help Juno Find Its Way

Space navigation is tricky. There's no up or down, no left or right, and no road signs. This device uses stars to help determine if a spacecraft is off course. It takes nifty pictures, too.