**Nature Geoscience has Embargoed Details until 8 a.m. PDT/11 a.m. EDT Sept. 28)**

NASA will detail a major science finding from the agency's ongoing exploration of Mars during a news briefing at 8:30 a.m. PDT (11:30 a.m. EDT) on Monday, Sept. 28. The event will be broadcast live on NASA Television and the agency's website.

News conference participants will be:

-- Jim Green, director of planetary science at NASA Headquarters

-- Michael Meyer, lead scientist for the Mars Exploration Program at NASA Headquarters

-- Lujendra Ojha of the Georgia Institute of Technology in Atlanta

-- Mary Beth Wilhelm of NASA's Ames Research Center in Moffett Field, California and the Georgia Institute of Technology

-- Alfred McEwen, principal investigator for the High Resolution Imaging Science Experiment (HiRISE) at the University of Arizona in Tucson

Members of the public can ask questions during the briefing using #AskNASA.

For NASA TV information, schedules and to view the news briefing, visit:

http://www.nasa.gov/nasatv

The event will also be carried live on:

http://www.ustream.tv/NASAJPL

For more information about NASA's journey to Mars:

https://www.nasa.gov/topics/journeytomars

News Media Contact

Guy WebsterJet Propulsion Laboratory, Pasadena, Calif.818-354-6278guy.webster@jpl.nasa.govDwayne Brown / Laurie CantilloNASA Headquarters, Washington202-358-1726 / 202-358-1077dwayne.c.brown@nasa.gov / laura.l.cantillo@nasa.gov2015-300