In a discovery that challenges conventional optics, scientists have managed to make a laser beam cast its own shadow—a feat previously thought impossible, as light typically passes through other light ...

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 ...

Whether or not aliens exist, the SETI program has never stopped believing. Yet today, radio telescopes are no longer seen as the best way to ...

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 — ...

For the experiment, a high-power green laser was directed through ruby cube and illuminated with a blue laser from the side. The green laser increases the optical absorption of the blue illuminating ...

Since the discovery of lasers, laser outputs have been limited to simple wavefront profiles, such as Gaussian (with the highest intensity in the middle, and lower intensity towards the tails) and ...

The detector would search for ripples in the fabric of space-time left in the spacecraft's wake. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works.