Scientists and engineers from three space agencies worked for 20 years to complete the $10bn telescope, which is designed to see objects using light that is invisible to the human eye.
The light-gathering ability of the telescope - the best measure of its power to"see" things - is more than twice that of Hubble. What's more, the $10bn machine is designed to see objects using infrared light.
Scientists and engineers from three space agencies, NASA, the European Space Agency and the Canadian Space Agency, worked for 20 years to complete the telescope.The first major challenge for JWST's designers was to get a telescope bigger than two double-decker buses side-by-side into space in the first place.
To the surprise of even some of those who built it, JWST unpacked itself flawlessly once safely in orbit in January - with each segment of its mirror now perfectly aligned.World's most powerful telescope launched Though space is cold, one glimpse of the Sun's rays or stray waste heat from its own systems would blind the telescope's infrared vision much like the headlights of an oncoming car at night.
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