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Cloud-9 is a REionization-Limited-H i Cloud (RELHIC), which may turn out to be a starless dark matter galaxy. This RELHIC may have a mass 5 billion times that of the Sun and was found in the vicinity of the spiral galaxy M94, in the constellation Canes Venatici.

References

1. Benitez-Llambay, Alejandro; Navarro, Julio F. (September 2023). "Is a Recently Discovered H i Cloud near M94 a Starless Dark Matter Halo?". The Astrophysical Journal. 956 (1): 1. arXiv:2309.03253. Bibcode:2023ApJ...956....1B. doi:10.3847/1538-4357/acf767. ISSN 0004-637X.
2. "Astronomers may have found a galaxy that's all dark matter, with no stars". www.skyatnightmagazine.com. Retrieved 2024-01-22.

v t e Constellation of Canes Venatici
Canes Venatici in Chinese astronomy Giant Void List of stars in Canes Venatici
Stars	Bayer α α (Cor Caroli) β (Chara) Flamsteed 4 5 6 10 19 20 21 24 25 Variable R Y (La Superba) RS AM AW BH DG HR 4997 Other Gliese 521 HAT-P-12 HAT-P-36 (Tuiren) CWISE J1249+3621
Exoplanets HAT-P-12b
Star clusters Messier 3
Galaxies	Messier 51 a (Whirlpool Galaxy) b 63 94 106 NGC 4111 4138 4145 4151 4163 4183 4214 4217 4242 4244 4395 4399 4400 4401 4449 4485 4490 4534 4618 4625 4627 4631 4656 4657 4707 4800 4861 5002 5003 5005 5023 5033 5112 5223 5229 5238 5273 5371 5394 Numbered I II Other 3C 285 3C 286 3C 288 B2 1308+326 DDO 169 IC 883 IC 4182 IC 4263 IC 4271 I Zwicky 36 KKR 03 4C +41.26 TON 618
Galaxy clusters Canes II Group M51 Group M94 Group NGC 4631 Group
Astronomical events GRB 090429B SN 1994I SN 2005cs SN 2008ax
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