WASHINGTON — NASA will host a media teleconference at 1 p.m. EST on Thursday, Nov. 12, to discuss attempts to free the Mars rover Spirit from sandy soil where the venerable robot has been stuck for the past six months.

The participants are:

– Doug McCuistion, director of the Mars Exploration Program, NASA Headquarters in Washington

– John Callas, project manager, Mars Exploration Rovers, NASA’s Jet Propulsion Laboratory in Pasadena, Calif.

– Ashley Stroupe, rover driver, Mars Exploration Rovers, JPL

– Ray Arvidson, deputy principal investigator, Mars Exploration Rovers, Washington University in St. Louis

To participate in the teleconference, reporters must contact the JPL media relations office at 818-354-5011 for the call-in number and passcode.

At the beginning of the briefing, related images and supporting material will be available online at: http://www.nasa.gov/mission_pages/mer/news/telecon/tel20091110.html

Audio of the teleconference will be streamed live at: http://www.nasa.gov/newsaudio