Solar Sails

Instead of looking at space atmosphere as a toxic vacuum, look at it as an asset, said Les Johnson, who handed a silver 4-inch square of solar sail material as light as small bird’s feather to an audience member. As the piece of sail traveled through a standing-room-only crowd in… Read More

Physicist, science writer to speak Nov. 5 at engineering school, University Club of Nashville A physicist by day and a science author and editor by night, Les Johnson – Senior Technical Advisor for NASA’s Advanced Concepts Office, Marshall Space Flight Center – shares his passion… Read More