NASA Engineers Propose Combining a Rail Gun and a Scramjet to Fire Spacecraft Into Orbit [Nasa]

NASA has been working on creating a new, cheaper method to launch spacecrafts. Their latest proposal involves train tracks, a rail gun and a scramjet. Here's what they're trying to do:
In April, President Obama urged NASA to come up with, among other things, a less expensive method than conventional rocketry for launching spacecraft. By September, the agency's engineers floated a plan that would save millions of dollars in propellant, improve astronaut safety, and allow for more frequent

MacBook Laptops