Breakthrough Starshot

(Guardian Science) – Tim Radford:

In an unprecedented boost for interstellar travel, the Silicon Valley philanthropist Yuri Milner and the world’s most famous cosmologist Stephen Hawking have announced $100m (£70m) for research into a 20-year voyage to the nearest stars, at one fifth of the speed of light.

Breakthrough Starshot – the third Breakthrough initiative in the past four years – will test the knowhow and technologies necessary to send a featherweight robot spacecraft to the Alpha Centauri star system, at a distance of 4.37 light years: that is, 40,000,000,000,000 kilometres or 25 trillion miles. …

theguardian 2016/apr/12 star-voyage

Alpha Centauri

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