Now this has my curiosity up. Probably will be something esoteric but you never know. I can only think of a couple of things were they would hold their cards this close to their chest. (Who knows maybe they discovered intelligent life on Earth.) See below.
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WASHINGTON -- NASA has scheduled a media teleconference Wednesday, May 14, at 1 p.m. EDT, to announce the discovery of an object in our Galaxy astronomers have been hunting for more than 50 years. This finding was made by combining data from NASA's Chandra X-ray Observatory with ground-based observations.
Live audio of the teleconference will be streamed online at:
http://www.nasa.gov/newsaudio
A video file about the discovery will air on NASA Television on May 14.