CHICAGO -- Measurement of metal ion levels in whole blood in patients with metal-on-metal (MoM) hip implants is useful -- but imperfect -- for identifying those whose new hips are functioning poorly ...

Britain's QinetiQ has started commercially operating its ion propulsion chamber, with the first customer, French engine manufacturer Snecma, using the facility to test Hall Effect Thrusters. The ...

Breaking space news, the latest updates on rocket launches, skywatching events and more! You are now subscribed Your newsletter sign-up was successful Want to add more newsletters? Delivered daily ...

Unlike the other tests described on this page, the test for carbonate ions works whatever acid is added. Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first.

Engineers from NASA and the University of Michigan have revealed record breaking tests of a radical ion engine designed to get man to Mars. Known as a Hall Thruster, it is one of three Mars engine ...