A Florida team working with the US Air Force says that it's built and tested an experimental model of a rotating detonation rocket engine, which uses a spinning series of chaotic explosions inside a ring channel to create super-efficient thrust.

Assembling the wing from thousands of tiny identical pieces could make aircraft lighter and more energy efficient. How it works: The wing is made from an open, lightweight lattice framework that is covered with a thin layer of polymer material. It looks like thousands of matchstick-type struts welded together in small triangle shapes.

JAKARTA, Indonesia - The first commercial mission for SpaceX's Starship and Super Heavy launch system will likely take place in 2021, a company executive said June 26. Jonathan Hofeller, SpaceX's vice president of commercial sales, said the company is in talks with prospective customers for the first commercial launch of that system roughly two years from now.