The PSRC website will be unavailable Friday evening through Saturday afternoon as electrical work occurs in the American Center of Physics server room. Down time will begin at 6PM Eastern Time on Friday. Service is expected to resume by 6PM on Saturday, July 30.
Probing whether space is curved or flat, cosmologists have been searching for clues in ripples in the universe's microwave background left from the big bang. These tutorials explain the cosmic microwave background for neophytes, as well as more advanced readers.
Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.