Galaxies far from the Milky Way reveal the history of star formation in the universe. Look at these new radio images covered with dots, each of which is a distant galaxy. The brightest spots are galaxies that driven by supermassive black holes and shine brightly in radio light. But what makes this photo special is the many weaknesses that fill the sky.
To learn about the history of star formation in the universe, we must look to the past.
Galaxies throughout the universe have formed stars over the past 13 billion years. But most stars were born 8 and 11 billion years ago in an era called the “cosmic afternoon”.
The challenge for astronomers has been to study dim light ever since. Optical telescopes can see distant galaxies, but new stars are mostly hidden in dusty gas clouds.
Radio telescopes can see through dust and observe rare and bright star galaxies. But so far, they have not been sensitive enough to detect galaxies like distant galaxies that are responsible for the majority of The Universe star formation.
With 64 MeerKAT dishes, the team monitors the area for a total of 130 hours. The resulting image shows an area of sky comparable in size to a full five moons containing tens of thousands of galaxies.
When radio waves travel at the speed of light, this image is a time machine that has been trying to form stars in this distant galaxy for billions of years, the astronomer said.
Astronomers want to use this image to learn more about star formation throughout the universe. These preliminary results say that the rate of star formation around the dining room is even higher than expected, the researchers said.
The next generation of tools, the arrangement of square kilometers and the next generation of very large arrangements, must be more spectacular.