Kathleen Howell never aspired to walk on the moon. When she watched the first lunar landing as a teenager in 1969, she was more intrigued by the looping route that brought the Apollo 11 astronauts ...

Physicists have discovered a tiny asteroid, about one kilometer wide, that is locked into the same orbit as Earth—only the second such cosmic body of its type that has been identified to date. And now ...

Reliably guiding and capturing optical waves is central to the functioning of various contemporary technologies, including communication and information processing systems. The most conventional ...