Engineers and astronomers at the University of Utah have designed a unique new kind of telescope lens: a flat lens with microscopic etchings to refract light. If the concept can be scaled up, these ...

For hundreds of years, the principle behind the telescope has been as simple as it gets: build a lens or mirror to collect a large amount of light, focus that light onto a detector (like an eye, a ...

Telescopes keep getting bigger — and more expensive. But what if there were a better way? One astronomer has suggested a possible work-around: Turn the entire Earth into a telescope lens by using the ...