Mars Sample Return is the highest priority science mission for the next decade as recommended by the 2011 Decadal Survey of Planetary Science [1]. This article presents the results of a feasibility study for a Mars Sample Return mission that efficiently uses emerging commercial capabilities expected to be available in the near future. The motivation of our study was the recognition that emergin...

Much research has been published in the literature on the mathematical approaches to obtain the most accurate earth resistance and resistivity values. However, the published research only conducted the comparisons among the mathematical/computational techniques and so far none has conducted validation tests of these mathematical/computational methods against the real earth resistance measuremen...

What is requested? The Group on Earth Observations (GEO) was established in July 2003 to begin development of the Global Earth Observation System of Systems (GEOSS). GEO is an international partnership espousing the free exchange of Earth observational data. The US participates in GEO and GEOSS through the Interagency Working Group on Earth Observations (IWGEO), a collection of 15 Federal agenc...