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There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
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Workers in Livingston, Louisiana are shown installing equipment used to split a powerful laser into two beams, each one traveling down a different arm of the LIGO observatory. The beams bounce off a mirror at the end of each arm and return to the center exactly out of phase, cancelling out the energies of each. (Credit: LIGO Scientific Collaboration)
