Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on amateur telescopes. When you purchase through links on our site, we may earn an ...

For centuries, lenses have worked the same way: curved glass or plastic bending light to bring images into focus. But traditional lenses have a major drawback—the more powerful they need to be, the ...

Small, portable telescopes are perfect for setting up quickly and travelling to dark sky sites over the festive season.