NASA today released the first science image from the world's most powerful space telescope, showing the infrared universe in a depth never seen before.
After years of planning and months in space, the James Webb Space Telescope has inaugurated a new era in astronomy. NASA today released the first science image from the world’s most powerful space telescope, showing the infrared universe in a depth never seen before.
The image shows galaxy cluster SMACS 0723 and is the deepest infrared image of the distant universe to date. It shows the cluster as it would have been 4.6 billion years ago, and because the mass of the cluster is so great it bends spacetime and allows us to see even more distant galaxies behind it.
Webb’s instruments are so sensitive that they can observe extremely distant targets, which — because of the time it takes for light to travel from these great distances to Earth — is like looking back in time. Webb will search out some of the earliest galaxies in the universe, helping to elucidate a period called the Epoch of Reionization when the earliest stars spread light through the universe for the first time.
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