RUSSIAN (俄羅斯的) billionaire Yuri Milner recently announced a plan to send a spacecraft to the star system Alpha Centauri (南門二), about 4.37 light years away from us. That is much farther than Neptune (海王星), the planet farthest from the sun.
Scientists thought that this was impossible, because sending a spacecraft would take too much time and energy. Milner and his team has decided instead to make the spacecraft very small – as small as a computer chip! Its speed will be about 20 percent the speed of light. This way, it can arrive at Alpha Centauri in 30 years rather than the old estimated time of 30,000 years!
(This article is published on Goodies on 25 April 2016)