https://uk.news.yahoo.com/scientists-calculated-long-itll-reach-223900378.html
Scientists Have Calculated How Long It’ll Take to Reach Distant Stars
From Popular Mechanics A team of scientists have calculated how long it would take four operating spacecraft to reach the nearest star. The researchers compared the predicted paths of four spacecraft to the paths of nearby stars, as measured by the Gaia space telescope, to see where and when they might overlap.