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Astronomers Confirm Existence of Dark-Matter-Deficient Galaxies | Astronomy - Sci-News.com
Jun 18, 2021 32 secs
In a new study, astronomers used data from the NASA/ESA Hubble Space Telescope to calculate a more accurate distance to an ultra-diffuse galaxy called NGC 1052-DF2 (DF2 for short).

This Hubble image shows NGC 1052-DF2, an ultra-diffuse galaxy located 72 million light-years away in the constellation of Cetus.

The new distance estimate is that DF2 is 72 million light-years away as opposed to 42 million light-years, as reported by other teams.

This places the galaxy farther than the original Hubble 2018 estimate of 65 million light-years distance.

A Tip of the Red Giant Branch Distance of 22.1 ± 1.2 Mpc to the Dark Matter Deficient Galaxy NGC 1052-DF2 from 40 Orbits of Hubble Space Telescope Imaging

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