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Images are expected to be available at approximately 1:30 a.m.

Initial raw images from the flyby will be sent to Earth for processing that will begin at approximately midnight PST (3 a.m. During the flyby, the spacecraft will take 72 images and store them in an onboard computer. "Going back for another look at Tempel 1 will provide new insights on how comets work and how they were put together four-and-a-half billion years ago."Īt approximately 336 million kilometers (209 million miles) away from Earth, Stardust-NExT will be almost on the exact opposite side of the solar system at the time of the encounter. "Every day we are getting closer and closer and more and more excited about answering some fundamental questions about comets," said Joe Veverka, Stardust-NExT principal investigator at Cornell University, Ithaca, N.Y. This would be an added bonus to the huge amount of data that mission scientists expect to obtain. The Stardust spacecraft may capture an image of the crater created by the impactor. In July 2005, the Deep Impact spacecraft delivered an impactor to the surface of Tempel 1 to study its composition. We expect this method to be generically applicable over a wide range of wavebands, with a potential of performing various spectral diagnostics over the panchromatic EBL.The mission will expand the investigation of the comet initiated by NASA's Deep Impact mission.

These empirically constrained UVB spectral features provide insights on the cosmic star formation history, the absorption due to neutral gas in the interstellar medium, and the potential emission from the diffuse intergalactic medium. I will show the first application with data by probing the continuum, Lyα line, and Lyman break in the cosmic UV background (UVB) up to z~2 using GALEX All Sky and Medium Imaging Surveys. For this, we developed a cross-correlation based tomographic method to recover previously lost redshift and sub-bandpass frequency information for the diffuse light in classic wide-field, broadband imaging surveys. However, one needs to resolve key spectral features in the EBL in order to extract the physics.

The extragalactic background light (EBL) provides a summary statistic of cosmological galaxy formation and encodes information from all relevant physics in a light-weighted manner.