next nearest star http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time 50,000 years "How long would it take to get to Alpha Centauri?" http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time "How long would it take to get to Alpha Centauri?" http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time "Travelling to Alpha Centauri" http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time "Travelling to Alpha Centauri" http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time Alpha Centauri http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time http://earthsky.org/space/alpha-centauri-travel-time