May 25, 2011 Dwayne Brown Headquarters, Washington 202-358-1726 dwayne.c.brown@xxxxxxxx MEDIA ADVISORY: M11-103 NASA TO ANNOUNCE NEW PLANETARY SCIENCE MISSION WASHINGTON -- NASA will host a media teleconference at 4:30 p.m. EDT on Wednesday, May 25, to discuss the selection of a future science mission that will usher in a new era in planetary exploration. Jim Green, director for NASA's Planetary Science Division Mission in Washington, and other officials will take reporters' questions during the teleconference. To participate, reporters must e-mail their name, media affiliation and telephone number to Steve Cole at stephen.e.cole@xxxxxxxx by 4 p.m. Wednesday. For live streaming audio of the teleconference, visit: http://www.nasa.gov/newsaudio A news release about the new mission will be available at 4 p.m. at: http://www.nasa.gov -end- To subscribe to the list, send a message to: hqnews-subscribe@xxxxxxxxxxxxxxxxxxxxxx To remove your address from the list, send a message to: hqnews-unsubscribe@xxxxxxxxxxxxxxxxxxxxxx