アメリカ自然史博物館のインスタグラム(amnh) - 3月15日 00時34分

Astronomers using the Hubble Space Telescope, including Museum research associate Or Graur, have found the cosmic equivalent of a four-leaf clover: four images of the same supernova arranged in a pattern called Einstein’s Cross. Today also happens to be the 136th anniversary of Albert Einstein's birth!
Ordinarily, a single image of the supernova’s light can be seen from Earth. But as the light passes through the galaxy cluster, gravity bends it onto new paths, several of which are pointed at Earth, creating a multiple image in an effect known as gravitational lensing. Although astronomers have discovered dozens of similar images of galaxies and quasars, this is the first time a supernova has resolved into several images.
Learn more by clicking the link in our profile. ©NASA/ESA

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