Is Planet 9 a Black Hole? COSMOS in a minute #27 @TheSecretsoftheUniverse

The Secrets of the Universe | Is Planet 9 a Black Hole? COSMOS in a minute #27 @TheSecretsoftheUniverse | Uploaded June 2023 | Updated October 2024, 4 days ago.

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$Game Changer! A Mysterious Galaxy That Emits No Light Has Been Found Astronomers have discovered a mysterious galaxy that emits no visible light. They have found the first dark galaxy in nature. Its a loner lying 94 million light-years away. Apart from a small fraction of stars, more than 90% of it is composed of dark matter. At first, the researchers thought it was a regular dwarf galaxy with very few stars. However, a detailed analysis of the galaxy revealed it’s an oddball that defies all expectations. Its properties challenge our understanding of extragalactic astronomy. Furthermore, this dark galaxy could solve one of the biggest astronomical mysteries, the missing satellite problem. But the intriguing question is that if it emits no visible light, then how did astronomers find it in the first place? How did they even conclude it’s a galaxy millions of light years away? Finally, and most importantly, what’s the missing satellite problem that has puzzled astronomers for decades? The 48th episode of the Sunday Discovery Series answers all these questions. All Episodes Of The Series: https://bit.ly/369kG4p Basics of Astrophysics series: https://bit.ly/3xII54M REFERENCES: Discovery of an isolated dark dwarf galaxy in the nearby universe, Xu et al. - http://bit.ly/3Z3XMSE There is No Missing Satellites Problem, Kim et al. - https://arxiv.org/pdf/1711.06267.pdf Created by: Rishabh Nakra and Shreejaya Karantha Narrated by: Jeffrey Smith The Secrets of the Universe on the internet: Website: https://bit.ly/sou_website Facebook: https://bit.ly/sou_fb Instagram: https://bit.ly/sou_ig Twitter: https://bit.ly/sou_twitter$

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