"Alpha Centauri is 4.3 light-years away ... "If this all works right, we can hold the beam together in space a very long distance — thousands of times the distance from Earth to the sun ...

An art installation featuring 30 laser beams in primary colors will shine from the top of the Space Needle Friday night.

Try to fathom the power of 1 million nuclear power plants. Now, imagine there is a way to pack the equivalent of that into ...

What would happen if you chased a beam of light as it moved through space? Einstein started wondering about this when he was just 16 years old. If you could somehow catch up to the light and ...