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Detailed explanation-1: -In the latest discovery, a group of ESA Astronomers has discovered how many new quasars? Explanation: A group of astronomers at the European Space Agency have discovered 12 new quasars that have been warped by a naturally occurring cosmic ‘lens’ and split into four similar images.

Detailed explanation-2: -More than a million quasars have been found, with the nearest known being about 600 million light-years away from Earth. The record for the most distant known quasar continues to change.

Detailed explanation-3: -At the most basic level, quasars are often split into two categories based on their spectra: Type 1 quasars, which have broad emission lines (and a smattering of narrow ones), and Type 2 quasars, which have only narrow lines.

Detailed explanation-4: -We now know that the number of quasars was greatest at the time when the universe was only 20% of its present age.

Detailed explanation-5: -Maarten Schmidt, who in 1963 became the first astronomer to identify a quasar, a small, intensely bright object several billion light years away, and in the process upended standard descriptions of the universe and revolutionized ideas about its evolution, died on Sept. 17 at his home in Fresno, Calif. He was 92.