Journal
ADVANCES IN SPACE RESEARCH
Volume 39, Issue 2, Pages 254-258Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.asr.2006.09.019
Keywords
STEP; equivalence principle; gravitational experiments; general relativity
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Funding
- STFC [PP/E001203/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/E001203/1] Funding Source: researchfish
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STEP is one of a number of missions now being developed to take advantage of the quiet space environment to carry out very sensitive gravitational experiments. Using pairs of concentric free-falling proof-masses, STEP will be able to test the equivalence principle (EP) to a sensitivity at least five orders of magnitude better than currently achievable on ground. The EP is a founding principle of general relativity and STEP is the most sensitive experiment of this type planned so far, aiming at 1 part in 10(18). (C) 2007 Published by Elsevier Ltd on behalf of COSPAR.
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