Cheaper than advanced air defenses and more versatile than low-tech options, lasers have become a popular choice for nations ...

Plasma, ionized gas and the fourth state of matter, makes up over 99% of the ordinary matter in the universe. Understanding ...

As of Sept. 17, the Nebula Cosmo Laser 4K projector is on sale for $1,099.99 at Amazon, marked down from the standard price ...