A rapidly increasing percentage of the world’s population is connected to the global information environment. The new information age has seen rise of social media, bloggers, smartphones, plethora of cable and satellite news channels. It can also be seen in the ongoing Internet of things revolution, the internetworking of physical …

Vehicles propelled by rocket engines are commonly called rockets. Rocket vehicles carry their own oxidizer, unlike most combustion engines, so rocket engines can be used in a vacuum to propel spacecraft and ballistic missiles. Compared to other types of jet engines, rocket engines are the lightest and have the highest …