The Wide Field and Planetary Camera 2, now on display at the Smithsonian's National Air and Space Museum, returned to Earth in May 2009 after more than 15 years in orbit. Eric Long/NASM hide caption

itoggle caption Eric Long/NASM

The presence of water on the moon could enable astronauts to make their own breathing oxygen and to use the moon as sort of a space-based filling station. NASA/AP hide caption

itoggle caption NASA/AP

A new study suggests that a high-fat and high-sugar diet can dramatically affect the microbes living in your gut. istockphoto.com hide caption

itoggle caption istockphoto.com

A new study suggests that crying infants may be imitating the patterns of the language they heard while in the womb. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Artist concept of the Ares I-X rocket. Courtesy of NASA hide caption

itoggle caption Courtesy of NASA

Every time you crack open a soda, your taste buds may help you get the full experience of the carbonated beverage. Arthur Carlo Franco/iStockphoto.com hide caption

itoggle caption Arthur Carlo Franco/iStockphoto.com