Here’s how it works. The supermassive black hole at the center of our Milky Way galaxy periodically "burps" a "mini-jet" out into space. The Milky Way's supermassive black hole, known as ...

Last year, the company released plans for 3D-printing your own mini jet engine. Unlike the latest engine, the little plastic model cranks by hand and will get nowhere close to 33,000rpm.

The Jet Suit is a device from Gravity Industries that allows you to fly at 32 mph for up to nine minutes. It gives the wearer full control through five mini jet engines. There are two mini engines ...