A California startup wants to beam extra sunlight to Earth orbiting mirrors, but some are skeptical about whether the physics ...

In our experiments, a beam of sunlight was converged successively by a telescope objective of 18 cm. aperture and 230 cm. focal length, and by a second lens of 5 cm. focal length. At the focus of ...

We will see rain chances continue with several dry hours each day before more widespread rain moves in to close out the week.

Multiple people spotted a mysterious beam of light in the sky last week. The “red flare”, as many described it, was spotted by people in Houston and other places throughout the world.

The sun has produced energy for billions of years. Every hour the sun beams more energy onto Earth than it needs to satisfy global energy needs for an entire year. In one technique, long troughs ...