The Lovell telescope’s huge white bowl can be seen for miles around inÂ Cheshire.
As a radio telescope, the parabolic dish gathers incoming radio waves from space.
- its usedÂ for to pick up waves instead of light waves.
- its like reflecting telescopes, have a big dish instead of mirror to collect and focus data.
- at the centre of its dish, radio telescope has an antenna to pick up radio signals.
- radio waves are much longer than light waves, so radio telescopes dishes are very big, up to 100 metres across.
- VLBA – Very Long Baseline Array is made of ten dishes scattered across the USA. (VLBA’s map)
- radio astronomy led to discovery of pulsars and background radiation from the Big Bang.
- radio galaxies are very distant – only faintly visible , but they can be detached because they give out radio waves.
- radio astronomy proved that the Milky-Way is a disc-shaped galaxy with spiralling arms. (diagram)
Largest Radio Telescope
Aerial view of the Observatory.
- at 1,000 feet / 305 metres across, the Arecibo radio telescope in Puerto Rico in South America, is the largest dishÂ telescope in the world. (wikipedia / website)
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