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Yesterday β€” 8 February 2026Main stream
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NASA discovers a surprisingly massive galaxy cluster 2 billion years earlier than supposed

Two powerful NASA observatories looked deeply into a patch of sky and found a galaxy cluster forming only about one billion years after the Big Bang. Scientists never expected to find something as massive as a galaxy cluster at such an early time in the universe’s existence.

Webb's 255-hour-long observation reveals invisible dark matter in a map area containing nearly 800,000 galaxies

Using its Near-Infrared Camera (NIRCam), NASA’s James Webb Space Telescope peered into a region for a total of about 255 hours. This exceptionally long observation allowed astronomers to trace dark matter by studying how its gravity distorts and influences the light from distant galaxies.

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