The James web telescope has recently revealed galaxies in the Big Dipper (asterism of stars in the constellation Ursa Major) corresponding to 510 million years after big bang.
Despite having the same mass as the Milky Way, one of the galaxies is 30 times smaller.
This indicates the presence of large and mature but remarkably compact galaxies teeming with stars far sooner than the scientists had considered.
These new findings have challenged our current understanding of galaxy formation as they should not have existed so early in their life.
About James Web telescope
The telescope is a result of an international collaboration between NASA, ESA, and the Canadian Space Agency. launched in December 2021.It is the largest and most powerful infrared space telescope ever built.
It can see backwards in time to just after the big bang by looking for galaxies that are so far away. From where the light has taken many billions of years to get from those galaxies to our telescope.
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