Flying to Alpha Centauri

AlphacentauriSome big ideas sometimes come with pretty long timeline. In a post "Alpha Centauri and the Long Haul," Paul Gilster puts star travel in interesting context, pointing out that buildings like the Hagia Sophia in Constantinople the Pantheon in Rome have been around for at least 1,400 years, about what time it would take to get to Alpha Centauri using improved existing technology. Interesting thought, that.

The star - actually a triple system - was captured recently by Cassini off the bow of Saturn's rings. Click image for a much better view of two of the three stars.