One way to understand modern jet engines is to compare them with the piston engines used in early airplanes, which are very similar to the ones still used in cars.A piston engine (also called a reciprocating en
000 feet below the surface. The data and images these robots report will help scientists study the deepest corners of the ocean. Orpheus could pave the way for exploring other planets and moons suspected to have water on them, including Saturn’s moon Titan and Jupiter’s moon Europa. Robots...