. "Reaves is responsible for the design of a viable full-scale solar sail ."@en . . . . "Puerto Rican/American"@en . "Mercedes Reaves is a Puerto Rican research engineer and scientist. She is responsible for the design of a viable full-scale solar sail and the development and testing of a scale model solar sail at NASA Langley Research Center in Virginia."@en . . "electronics engineer and scientist"@en . . . . "Mercedes Reaves"@en . "Mercedes Reaves is a Puerto Rican research engineer and scientist. She is responsible for the design of a viable full-scale solar sail and the development and testing of a scale model solar sail at NASA Langley Research Center in Virginia."@en . "Puerto Rico"@en . "Mercedes Reaves"@en . . "150"^^ .