Across The Universe, Cont. -- An Accidental Discovery

(click on images to enlarge)



From NASA/ ESA, January 31, 2019:  This image, taken with Hubble’s Advanced Camera for Surveys shows a part the globular cluster NGC 6752. Behind the bright stars of the cluster a denser collection of faint stars is visible — a previously unknown dwarf spheroidal galaxy. This galaxy, nicknamed Bedin 1, is about 30 million light-years from Earth.

Credit: ESA/Hubble, NASA, Bedin et al.

Let's zoom out to see this galactic needle's place in a galactic haystack:



From NASA/ ESA:  This composite image shows the location of the accidentally discovered dwarf galaxy Bedin 1 behind the globular cluster NGC 6752. The lower image, depicting the complete cluster, is a ground-based observation from the Digitized Sky Survey 2. The upper right image shows the full field of view of the NASA/ESA Hubble Space Telescope. The upper left one highlights the part containing the galaxy Bedin 1.

Credit:  ESA/Hubble, NASA, Bedin et al., Digitized Sky Survey 2

How could they have missed it before?  It's only 30 million light years from here.