Refracting telescopes dominated the nineteenth century ... to the use of large-diameter multi-mode fibre that may be split into many single-mode fibres, for instance, to build an OH suppression ...

Explore the night sky with the best telescopes to suit every budget and experience level, perfect for observing February's snow moon and spectacular planetary parade. February is a great time to ...

[Bill Hammack] elaborates on one such piece of engineering: The Alignment Optical Telescope. The telescope was used to find the position of the Lunar Module in space so that its guidance computer ...

Unlike Morocco, Saudi Arabia has pencilled in March 1 for the beginning of Ramadan according to its national calendar, which ...