![]() ![]() The Lovell telescope at Jodrell Bank, part of e-MERLIN. They can also image the sky with a higher resolution, thus improving our view on the universe. ![]() The advantage of big telescopes is that they can detect fainter objects, looking further into space and therefore further back in time. ![]() The next generation of big telescopes are currently being planned and constructed, such as the James Webb Space Telescope (JWST), the Extremely Large Telescope (ELT) and the Square Kilometre Array (SKA). Examples include the Very Large Telescope (VLT), ALMA, the Hubble Space telescope and the Lovell radio telescope. There are many big telescopes around the world, observing space in all fields of the electromagnetic spectrum. Through observations made by big telescopes, our understanding of gravity is tested. This happened in 1916, when Albert Einstein published his theory of general relativity, which described gravity as the result of mass curving space-time around it. His theory described how objects feeling the force of gravity behaved, but Newton could not explain gravity’s origins. The force of gravity was first described mathematically by Sir Isaac Newton in 1687. Gravity is one of the four fundamental forces in the universe. An artist’s impression, using real data from the European VLT telescope, of the stars that orbit the supermassive black-hole at the centre of the Milky Way galaxy and the cloud of gas, which is falling into it. ![]()
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