China's FAST telescope discovers the biggest atomic cloud in universe
China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST) discovered the biggest atomic cloud in the universe by far, which is 20 times larger than our Milky Way galaxy.
The finding was published by an international team led by Chinese scientists in international journal Nature on Wednesday.
Using the world's largest single-dish telescope, the scientists observed a group of galaxies known as Stephan's Quintet. The result shows a mammoth low-density gaseous structure existed in a relatively far location from the center of Stephan's Quintet.
The atomic cloud is roughly 2 million light years wide and made up of hydrogen atoms. One light year is equivalent to about 9.46 trillion kilometers. Read More...
