The Alpha Centauri star system is more than 25 trillion miles or 4.37 light years away. Even today's fastest spacecraft would take about 30,000 years to get there. However, renowned cosmologist Stephen Hawking, investor and philanthropist Yuri Milner and Facebook Founder Mark Zuckerberg have announced a new Breakthrough Initiative focusing on space exploration and the search for life in the Universe which aims to shorten the journey to just ...