View Full Version : Astronomy Cast Ep. 384: Escaping Probes

2015-Sep-14, 06:50 PM
The gravity of the Earth is a tough thing to escape, but breaking free from the gravity of the Sun is on a whole other level. But humans have achieved this amazing accomplishment, and right now there are several spacecraft leaving the Solar System and never coming back. (...)Read the rest of Astronomy Cast Ep. […]

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