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Japanese astronomers discovered more than 1,800 supernovas in six months

After Japanese researchers gathered data, they discovered about 1,800 new supernovas or exploding stars in half a year. These studies have helped to measure the speed of the expansion of the universe, which is a very surprising discovery.
Japanese astronomers discovered more than 1,800 supernovas in six months
According to comprehensive media reports, supernovae are extremely rare. Only a few telescopes in the world can capture clear images. Even with the Hubble Space Telescope, it takes 10 years to discover 50 supernovas that are more than 8 billion light-years away from Earth. Researchers at the Kafiri Mathematical Cosmology Research Institute (Kavli IPMU) at the University of Tokyo, Japan, combined with the observations of the new generation of super wide-angle cameras (HSC) and the Pleiades telescope (also known as the Subaru Telescope), found 1,800 supernovae. Among them, 58 are type Ia supernovas 8 billion light-years away from the Earth.

Supernova is a violent explosion that some stars experience as they approach the end of the evolution. These explosions are extremely bright. They are 1 billion times brighter than the sun at any time during the explosion. Ia supernovas are very practical because of their constant maximum brightness. It helps researchers calculate the distance from the star to the Earth, which is most beneficial to researchers who want to measure the rate of expansion of the universe.

In addition to the Ia supernova, researchers have begun to study "super-luminous supernovae" 5 to 10 times brighter than it, and its unusual brightness can help researchers discover distant stars.