The European Space Agency's Euclid telescope has captured an unexpected and remarkable image of an Einstein ring. This phenomenon, predicted by Einstein's theory of relativity, occurs when the gravity of a foreground galaxy bends and magnifies the light from a background galaxy, creating a ring-like structure. The image showcases the ring surrounding the nucleus of the galaxy NGC 6505, with colourful foreground stars and background galaxies adding to the spectacle.
The Euclid space telescope brings the Einstein Ring into view. Check out the accidental discovery and what it looks like through the lens.The ring of light surrounding the centre of the galaxy NGC 6505 , captured by ESA’s Euclid telescope, is a stunning example of an Einstein ring. NGC 6505 is acting as a gravitational lens, bending light from a galaxy far behind it.
The siting was also unusual because in space distance, it is relatively close to Earth. The galaxy it encircles is around 590 million light-years from Earth. The background galaxy from which the light emanates, at 4.42 billion light years, is much farther away. That galaxy, unlike the much-observed NGC 6505 has never been investigated and was unnamed at the time of its discovery. Astronomers first detected NGC 6505 in 1884. The fact that Euclid saw the ring around a heavily studied galaxy, but emanating from a much farther unknown one makes the finding that much more special. It also validates the power of Euclid’s instruments.
“The galaxy has been known to astronomers for a very long time,” Valeria Pettorino, ESA Euclid Project Scientist, said in a press release. “And yet this ring was never observed before. This demonstrates how powerful Euclid is, finding new things even in places we thought we knew well.” Euclid’s mission is to explore the effects of gravity throughout the Universe. It is tasked with observing billions of galaxies out to 10 billion light-years. Astronomers expect to observe many more examples of gravitational lensing during Euclid’s mission. Finding such a spectacular one early in the space telescope’s journey is an encouraging sign that Euclid will find many more fantastic phenomena.
EINSTEIN RING GRAVITATIONAL LENSING EUCLID TELESCOPE NGC 6505 SPACE TELESCOPE
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