Solar powered

Back in the day, Heinlein predicted that space exploration will be speaheaded by commercial companies. He hadn't planned on the cold war's effects, though, and in the sixties, seventies, and eighties, space was a state run affair.

Now, however, it seems that RAH's predictions weren't as far off as they seemed. Earlier in the year, SpaceShipOne became the first manned privately owned craft to reach space. And in a few months, the privately owned Cosmos 1 will become the first solar sail space ship to leave the earth. We do, indeed, live in interesting times.

Link via Cheryl's Musings.