************************************************************************ IERS Message No. 381 July 24, 2019 ************************************************************************ Session on Lunar Laser Ranging at AGU Fall Meeting Dear colleagues, With the semi-centennial of the first man on the moon just passed, we wish to draw to your attention to the special session on Lunar Laser Ranging at the AGU fall meeting 2019 and ask you to consider a contribution: G017 - Science and Technology from 50 Years of Lunar Laser Ranging 50 years ago, on July 20, 1969 Apollo 11 touched down on the lunar surface. During this mission, Neil Armstrong and Edwin Aldrin deployed an array of cube corner reflectors on the lunar surface. This was the beginning of the long lasting science program of Lunar Laser Ranging (LLR). Today, half a century later, LLR is the only remaining science experiment of the Apollo era. LLR is able to determine many parameters associated with Earth-Moon dynamics, including the lunar ephemeris, lunar physics, the Moon's interior, reference frames and Earth orientation parameters. LLR has also become one of the strongest tools for testing Einstein's theory of general relativity in the solar system, like the temporal variation of the gravitational constant and the strong equivalence principle. This session invites contributions that report on the achieved science goals, outline the current technological and modeling challenges, as well as drawing up goals for the future. Please note, that the submission deadline is coming up: 31 July 2019 23:59 EDT/03:59 +1 GMT. For more information about the 2019 Fall Meeting, please consult: https://www2.agu.org/fall-meeting Kind regards, Juergen Mueller, Tom Murphy, Jean-Marie Torre and Ulrich Schreiber ************************************************************************ IERS Messages are edited and distributed by the IERS Central Bureau. If not stated otherwise, the IERS is only the distributor of the message and is not responsible for its content. To submit texts for distribution, please write to . To subscribe or unsubscribe, please create an IERS account or modify it: https://www.iers.org/Login/Login/EN/login_node.html or write to . Archives: http://www.iers.org/Messages/ ************************************************************************