Technology Development for Space Time Asymmetry Research (STAR) Mission

The Space Time Asymmetry Research (STAR), recently proposed as a NASA Small Explorer Mission (SMEX) will test isotropy and symmetry of space time at unprecedented precision. We will use precision molecular iodine stabilized Nd:YAG laser interferometers to search for small deviations from Lorentz Invariance, a cornerstone of relativity and particle physics and thus our understanding of the Universe. A Lorentz violation would have profound implications for cosmology and particle physics. An improved null result will constrain theories attempting to unite particle physics and gravity. We have previously submitted a Science White Paper to Astro 2010. While self contained, this White Paper mainly outlines technology development for the STAR mission, with emphasis on the science payload and spacecraft. With a funding level compatible with SMEX, we plan to develop a high performance, high reliability science payload in a 4~5 year time frame. The STAR mission is designed to work one-year in space, with possible extension to indefinitely longer as long as the payload remains functional.