| James webb space telescope (4) |  |
| Kepler space telescope (3) | |
| Optical telescope (4) | |
| Radio telescope (7) | |
| Space telescope (22) | |
| Telescope (123) | |
| James webb space telescope (4) | |
| Kepler space telescope (3) | |
| Optical telescope (4) | |
| Radio telescope (7) | |
| Space telescope (22) | |
| Telescope (123) | |
With a mirror that is 39 metres (128ft) in diameter, the E-ELT will dwarf all existing optical telescopes
spotting them is tricky with existing ground-based optical telescopes.""It's like trying to see the light from a feeble little LED 10cm away from a stadium floodlight,
Currently, the world's largest ground-based optical telescope is Gran Telescopio Canarias in the Canary islands
and ground-based optical telescopes including the Keck 10-meter telescope in Hawaii. wenty years ago we couldn't have done thisstrader says. e didn't have Hubble or Chandra.
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