Hacker News Reader

Thanks for the link. What I'm getting is we think emitting light that doesn't spread out over distance can be done with unbounded power, thus we can probably aspire to make ones that cross greater distances by spending more power on the creation and a degree of inventing new materials. Sound about right to you?

View on HN

I think for the any initial project, we'll have to resort to 1km scale laser arrays. These would allow for a beam with a low dispersion so there can be a good initial acceleration.

After a few hundred AU, the probes should be close to the target velocity

Reply on news.ycombinator.com