One big worry about space exploration is that hostile nations will deploy devastating weapons in space. The major international space treaty currently prohibits placing any weapons in orbit or on bodies is space such as asteroids, moons, etc. Recently the U.S.
The Air University (AU) is part of the United States Air Force's Air Education and Training Command, headquartered at Maxwell Air Force Base, Alabama. For the past two years, a group of officers and students at AU has been participating in a program called Space Horizons.
The human race has an insatiable hunger for electricity.
I recently posted a two part articles about a new type of engine that apparently defies the laws of physics. Most of the focus was on what is being called the EM engine. It is a sealed truncated cone that functions as a resonant cavity for microwaves. The unique feature of these engines is that they do not require any propellant. In the post, I briefly mentioned another drive based on similar principles called the Cannae drive.
3-D printing holds great potential for use in space. Instead of having to send up many different components, new components and structures can be directly created in space with 3-D printers.