Step (satellite test of the equivalence principle)

T.J. Sumner, J. Anderson, J.P. Blaser, A.M. Cruise, T. Damour, H. Dittus, C.W.F. Everitt, N.A. Lockerbie, Colin Pegrum

Research output: Contribution to journalArticle

52 Citations (Scopus)


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 1018. 2007 Published by Elsevier Ltd on behalf of COSPAR.
Original languageEnglish
Pages (from-to)254-258
Number of pages4
JournalAdvances in Space Research
Issue number2
Publication statusPublished - 2007


  • STEP
  • equivalence principle
  • gravitational experiments
  • general relativity

Fingerprint Dive into the research topics of 'Step (satellite test of the equivalence principle)'. Together they form a unique fingerprint.

  • Cite this

    Sumner, T. J., Anderson, J., Blaser, J. P., Cruise, A. M., Damour, T., Dittus, H., ... Pegrum, C. (2007). Step (satellite test of the equivalence principle). Advances in Space Research, 39(2), 254-258.