The first telescopes, known as refracting telescopes, were built in the early 17th century by Dutch eyeglass makers. They employed a pair of lenses—one convex fitted at the end of the scope, and one ...

NASA has released the latest images of 3I/ATLAS taken by the Hubble as scientists and observers prepare to spot the comet in the coming weeks.

Whenever news of a rare celestial event makes the headlines - be it a passing comet, meteor shower or a parade of planets - it makes one wish for two things: a telescope and a pitch-black garden to ...