Image Source: COSMOS4_U Using the Hubble Space Telescope (HST), astronomers have detected three new ultra-faint dwarfs (UFD) galaxies associated with the nearby spiral galaxy NGC 253. The newly found dwarfs turn out to be among the faintest systems so far discovered beyond the Local Group. ⭐Scl-MM-dw3 ⭐Scl-MM-dw4 ⭐Scl-MM-dw5 📌Scl-MM-dw3 :- Scl-MM-dw3 is the smallest UFD out of the newly detected trio as its elliptical half-light radius along the semi-major axis was estimated to be about 362 light-years. The galaxy is located some 11.34 million light-years away from the Earth and approximately 264,000 light-years away from NGC 253. Its stellar mass was calculated to be at a level of 110,000 solar masses. 📌Scl-MM-dw4 :- Scl-MM-dw4 turns out to be as massive as Scl-MM-dw3, but is nearly 70 percent larger—its half-light radius was measured to be 613 light-years. This UFD is located about 13.37 million light-years away, and its distance to NGC 253 is estimated to be some ...