From Newsgroup: sci.space.news

April 28, 2011

Trent J. Perrotto 
Headquarters, Washington                                         
202-358-0321 
trent.j.perrotto{at}nasa.gov 


MEDIA ADVISORY: M11-087

NASA HOSTS SCIENCE UPDATE ABOUT GRAVITY PROBE B MISSION

WASHINGTON -- NASA will hold a news conference at 1 p.m. EDT on 
Wednesday, May 4, to discuss the science results and legacy of the 
Gravity Probe B (GP-B) mission. The event will be in the NASA 
Headquarters Webb auditorium at 300 E Street SW in Washington. 

GP-B is a NASA physics mission designed to measure two key predictions 
of Albert Einstein's general theory of relativity. Einstein predicted 
that space and time are distorted by the presence of massive objects. 

The experiment used four ultra-precise gyroscopes to measure the 
geodetic effect, which is the warping of space and time by a 
celestial body like Earth, and frame-dragging, which is the amount a 
spinning object like Earth pulls space and time with it as it 
rotates. 

Media may attend the event, join by phone or ask questions from 
participating NASA centers. To RSVP or obtain dial-in information, 
media must contact Trent Perrotto at trent.j.perrotto{at}nasa.gov with 
their name, media affiliation and telephone number by 5 p.m. on May 
3. NASA Television and the agency's website will broadcast the event 
live. 

The news conference panelists are: 
-- Bill Danchi, senior astrophysicist and program scientist, NASA 
Headquarters, Washington 
-- Francis Everitt, principal investigator on Gravity Probe B Mission, 
Stanford University, 
-- Rex Geveden, president Teledyne Brown Engineering, Inc., 
Huntsville, Ala. 
-- Colleen Hartman, senior advisor, NASA Headquarters and research 
professor, George Washington University 
-- Clifford Will, professor of Physics, Washington University, St. 
Louis 

For NASA TV streaming video and downlink information, visit: 

http://www.nasa.gov/ntv 

For more information about Gravity Probe B, visit: 

http://www.nasa.gov/mission_pages/gpb 

and 

http://einstein.stanford.edu/ 

-end-

--- Synchronet 3.14a-Win32 NewsLink 1.85
--- SBBSecho 2.11-Win32