Light travels through space as an electromagnetic wave that does not require a medium in order to transfer energy. Due to its dual nature, light consists of both a wave of electromagnetic radiation and particles known as... More »

Light typically travels at 186,000 miles per second, but scientists have found a way to slow it down to 38 miles per hour. A team at the Rowland Institute for Science has found a new state of matter to help slow light do... More »

Light waves travel through the process of electromagnetic radiation. The combination of electrical and magnetic fields that light has is what gives light the distinct quality of being able to travel with or without a med... More »

Humans cannot hear sounds in outer space, because in order for the human ear to detect sound, a sound wave must have a medium, like air or liquid, to push and travel through, eventually exerting that pressure on the eard... More »

Light is composed of photons, which are discrete collections of energy with wave and particle properties, while sound travels as a wave through a medium, which makes it travel more slowly. While light and sound have some... More »

In theoretical physics, wormholes are points in space that act as an entrance and exit system for travel that is faster than the speed of light between two points. Scientists do not know of any existing wormholes, and th... More » Science Astronomy

It's highly unlikely that the light beam from the Luxor Hotel in Las Vegas is visible in space. The Luxor Sky Beam would blend in with the bright lights of Las Vegas, making it indistinguishable. More » Science Astronomy