Add Yahoo as a preferred source to see more of our stories on Google. In a discovery that challenges conventional optics, scientists have managed to make a laser beam cast its own shadow—a feat ...

Researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow, opening new possibilities for technologies that could use a laser beam to control ...

For more than half a century, the search for extraterrestrial intelligence has been built ...

Eerie beams of light are appearing at night along both sides of the U.S.-Canada border, and it didn’t take long for “UFO abduction rays” and “aliens beaming down” to enter the online discussion. In ...

A team of researchers from Texas A&M University has demonstrated the use of laser beams to lift and steer tiny engineered ...

The search for extraterrestrial life isn't limited to robots digging around in the giant sandbox we call Mars. In fact, scientists involved in SETI — the search for extraterrestrial intelligence — ...

MIT researchers have built a nanoscale photonic device shaped like a tiny ski jump that launches laser light directly off a silicon chip and steers it through free space. Reported by MIT on March 11, ...

Can light itself cast a shadow? It may sound like a philosophical riddle, but researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow. The ...