World Truth

There are a lot of hurdles to jump before we send the first human crew to Mars. Fuel for such a long mission adds a lot of weight and expense, and the time it takes to get there leaves astronauts exp…

NASA recently delivered $10 million in funding to Ad Astra Rocket Company of Texas for further development of its Variable Specific Impulse Magnetoplasma Rocket (VASIMR), an electromagnetic thruster …