NASA successfully launched this satellite Saturday January 31st, 2015.
SMAP stands for Soil Moisture Active Passive.
It uses microwaves to detect the amount of moisture in soil and the data will be used by many companies, organizations and government entities. This is another example of the type of project that will pay dividends well beyond what it cost to build and launch.
The company who makes the antenna has a 100% success rate in these deployable structures.