Seen here in incredible detail, thanks to the NASA/ESA Hubble Space Telescope, is the starburst galaxy formally known as PLCK G045.1+61.1. The galaxy, which appears as multiple reddish dots near the center of the image, is being gravitationally lensed by a cluster of closer galaxies, also seen in the image.

Gravitational lensing occurs when a large distribution of matter, such as a galaxy cluster, sits between Earth and a distant light source. As space is warped by massive objects, the light from the distant object bends as it travels to us, creating stretched, magnified and sometimes multiple images of the lensed object. This effect was first predicted by Einstein’s general theory of relativity.

From 2009 to 2013, the European Space Agency’s Planck space observatory captured multiple all-sky surveys. In the course of these surveys, with complementary observations by the Herschel Space Observatory, Planck discovered some of the brightest gravitationally lensed, high-redshift galaxies in the night sky.

It was during the study of these Planck-Herschel selected sources using Hubble that the optical starlight emitted from this ultra-bright galaxy was found.

Text credit: ESA (European Space Agency)
Image credit: ESA/Hubble & NASA, B. Frye

感谢美国宇航局/欧空局的哈勃太空望远镜,我们在这里看到了令人难以置信的细节,这是正式名称为PLCK G045.1+61.1的星暴星系。该星系在图像中心附近以多个红色点的形式出现,正被一个更近的星系群(也可以在图像中看到)引力透镜化。




文字来源:ESA (European Space Agency)
影像来源:ESA/Hubble & NASA, B. Frye

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tianzuo wang