WASHINGTON, Jan. 5, 2015 /PRNewswire-USNewswire/ — NASA will hold a media briefing at 2 p.m. EST Thursday, Jan. 8, in the James E. Webb Auditorium at NASA Headquarters in Washington to discuss the upcoming Soil Moisture Active Passive (SMAP) mission. The briefings will be broadcast live on NASA Television and streamed on the agency’s website. SMAP,…