ahlam1399
09-29-2016, 05:00 PM
To cap its 12-year scientific voyage, the Rosetta spacecraft will take a final plunge Friday. Scientists will signal Rosetta to crash into the surface of a comet ? and gather data all the way down.
أكثر... (http://www.npr.org/sections/thetwo-way/2016/09/29/495797996/scientists-bid-a-bittersweet-farewell-to-rosetta-the-comet-chaser?utm_medium=RSS&utm_campaign=news)
أكثر... (http://www.npr.org/sections/thetwo-way/2016/09/29/495797996/scientists-bid-a-bittersweet-farewell-to-rosetta-the-comet-chaser?utm_medium=RSS&utm_campaign=news)