What do you do if you have a sample from another planet, and you want to find out if it contains a certain molecule...maybe even one <br /><br />that will reveal whether the planet can sustain life? When scientists face a situation like this, they use an amazing tool: the mass <br /><br />spectrometer. It separates out materials, allowing scientists to look very closely at a sample and see what's inside.<br /><br />Credit: Courtesy NASA<br /><br />http://mystic-nights.com/videos/
