The position of the Planet will not be the same when the "Projectile" will arriv...

		coinerone on March 2, 2018 \| parent \| context \| favorite \| on: NASA finds a large amount of water in an exoplanet... The position of the Planet will not be the same when the "Projectile" will arrive. The Railgun must aim to the Destination the Planet will be. Fault tolerance will be a bigger issue than building a giant Railgun (Walmart maybe has one in stock already :P).