Next Big Future: 400 tons of mini carbon nanotube solar sails can b...: Adam Crowl and Crowlspace details “Sail-Beam” or “Macron Beam” propulsion of humans in spaceships to about 4.5% of lightspeed. Quarter-wav...
Solar sails are intriguing. I've written about them. If you want to finance a big project like this, then use the same technology to mine asteroids. But that would make too much sense.
Al Fin: "Cowboy Commentary", aka "Eat your veggies" The Flag banner is posted in order to defy those who would make patriotic symbols illegal or disreputable.
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