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From the moon to Mars.
Schmitt HH. Schmitt HH. Sci Am. 2009 Jul;301(1):36-43. doi: 10.1038/scientificamerican0709-36. Sci Am. 2009. PMID: 19555022 No abstract available.
Making a case for humans in space.
Schmitt HH. Schmitt HH. Science. 2004 May 7;304(5672):822. doi: 10.1126/science.304.5672.822c. Science. 2004. PMID: 15131288 No abstract available.