Standing on shoulders Both types of telescopes—Galileo's refractor ... that by using two different kinds of glass together in the objective lens, they could cause the red and blue ends of ...

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on ...

Here's how an innovative flat lens could solve these problems for satellites and space-based telescopes. Understanding ...

Before making your purchase, it’s essential to have a basic understanding of the two different types of telescope and how they work. At a basic level, all scopes on the market can be labelled as ...