Radar systems have been the backbone of military defenses for decades, but some aircraft just […] ...

Add Yahoo as a preferred source to see more of our stories on Google. These bubbles could spell trouble. A high-tech radar has detected invisible space bubbles over the Great Pyramids of Giza, ...

Instead of just hiding from radar, China's future jets might have a surprising way to use those signals to their advantage.

These bubbles could spell trouble. A high-tech radar has detected invisible space bubbles over the Great Pyramids of Giza, providing clues to scientists who hope to prevent future satellite ...