A team of U.S. and U.K. researchers has outlined a new way to detectalien moons by tracking subtle flashes of reflected light during lunar eclipses in distant planetary systems. The method, designed ...

“There is no dark side of the moon, really. Matter of fact, it’s all dark.” —Pink Floyd With my apologies to Roger Waters, who wrote those lyrics, there is a dark side of the moon. And sometimes it’s ...

A viral video of Dodger Stadium taken Aug. 20 appeared to show the stadium’s parking lot underwater from Tropical Storm Hilary. The helicopter pilot who took the video said there was "significant" ...

The company is seeking F.C.C. approval to test an idea to reflect sunlight to Earth at night, possibly powering solar panels. Critics say it could be bad for people and wildlife. By Kenneth Chang and ...

White light interferometry (WLI) is a contact-free optical method for measuring surface height. It uses the phase difference between the light reflected off a reference mirror and the target sample to ...