Tutorial from Kids Activities Blog.© Provided by Kids Activities (English) Dollar Bill Origami Rocket - Step 2. The right edge of the bill is folded backward to the vertical center line.

The previously used Rutherford engine passed qualification tests and is set to make history as the first 3D-printed engine to reach space for a second time.

On Tuesday, Stoke Space announced the firing of its first stage rocket engine for the first time earlier this month, briefly igniting it for about two seconds. The company declared the June 5 test ...