This image from the Wilkinson Microwave Anisotropy Probe (WMAP) depicts a three year picture of the infant universe. Colors indicate 'warmer' (red) and 'cooler' (blue) spots. White bars show the 'polarization' direction of the oldest light. This information helps to pinpoint when the first stars formed and provides new clues about events that transpired in the first trillionth of a second of the universe.