Cosul este gol
Conectează-te ca să te putem notifica când primești un răspuns
Les Johnson is a physicist whose many books include Graphene: The Superstrong, Superthin, and Superversatile Material That Will Revolutionize the World ; Solar Sails: A Novel Approach to Interplanetary Travel ; and The Spacetime War . He serves as principal investigator for NASA's first interplanetary solar sail space missions, Near-Earth Asteroid Scout and Solar Cruiser, and lives in Madison, Alabama.