Telescope

First Telescope

1608

The first telescope was unveiled in the Netherlands in 1608, made by Jacob Metius and Hans Lippershey. It was made famous, however, by Italian mathematician Galileo, who constructed his own, improved device and was the first to use it to explore space.

Reflector Telescope

1672

Early telescopes such as Galileo's consisted of glass lenses mounted in a tube, which Isaac Newton discovered caused differing refraction when different coloured lights passed through it. To solve this problem Newton designed a telescope which used mirrors, known as a reflector telescope.

Earl Rosse

1845

Irish nobleman the 3rd Earl of Rosse built an enormous telescope with a mirror 6ft in diameter. The telescope was placed in a pit near his home, Birr Castle, and consisted of a giant tube, at the bottom of which was a large metal mirror.

Hubble

1970

In the 1970s work began on a telescope that was to become the Hubble Space telescope, named after American astrologist Edwin Hubble. On 25 April 1990 it was deployed to its position beyond the earth's atmosphere where it now orbits the planet.

James Webb

2018

In 1996 plans began for the next generation space telescope – Hubble's successor. Named after former Nasa administrator, James Webb, it's a large infrared-optimised space telescope, set to be launched in 2018, which will reside in an orbit around 1 million miles away from earth.