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1. gizmodo.com › famous-red-star-betelgeuse-couldFamous Red Star Betelgeuse Could Actually Be Two Stars - Gizmodo

   gizmodo.com › famous-red-star-betelgeuse-could

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   17 hours ago · The companion star, if it exists, is roughly the same mass of our Sun, and may explain Betelgeuse’s long secondary period (LSP)—a 2,170-day (6-year) cycle during which the supergiant dims and ...

2. People also ask

   How much 'dark matter' does the galaxy have?

   • These MACHO s constitute only around 20% of the Galaxy ’s ‘dark matter’ (even though they are probably low mass stars and not strictly dark matter), with the remaining 80% still a mystery. All material is © Swinburne University of Technology except where indicated.

   MACHOs | COSMOS - Swinburne

   astronomy.swin.edu.au/cosmos/M/MACHOs

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   What is dark matter?

   • Dark matter is a component of the universe that makes up approximately 27% of the total mass (while only 5% is regular matter, like stars, planets, gas, dust, and humans). It has been given this name because it does not interact with regular matter in any way, not colliding with it or absorbing energy from it. We cannot see it or detect it with our current instruments.

   How Do We Know Dark Matter Exists? - Universe Today

   www.universetoday.com/119297/how-do-we-know-dark-matter-exists/

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   Where is dark matter located in a galaxy?

   • This theory suggests that dark matter can be found at the heart of a galaxy, some of it concentrated in a dense sphere and the rest lingering around as a vapor. However, in reality, cosmologists have observed that dark matter behaves in almost the opposite way: It orbits around the edge of a galaxy in a far-off halo structure.

   10 Intriguing Theories Of Dark Matter - Listverse

   listverse.com/2019/05/28/10-intriguing-theories-of-dark-matter/

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   What if a galaxy had no dark matter?

   • Using the SBF technique, to measure the distance to KKS2000 04 resulted in a distance of 64 million light years. A galaxy at that distance would represent the first example of a galaxy without dark matter. However, if the galaxy were closer, its content of dark matter would be greater and the object would not be anomalous.

   How do we measure the distance to a galaxy and why is it so ... - OUPbl…

   blog.oup.com/2019/05/how-we-measure-distance-galaxy-why-important/

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3. dailygalaxy.com › 2024 › 09Astronomers Discover a Rare Black Hole That Defies ...

   dailygalaxy.com › 2024 › 09

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   17 hours ago · Chinese astronomers have uncovered a low-mass black hole that challenges long-held astrophysical theories. This black hole, part of a binary system known as G3425, has a mass of about 3.6 solar ...

4. Videos

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     What is Dark Matter 🌌 Unveiling the Universe's Mystery!

     14 Sep 2024

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     25 Years Of Astronomy - Space.com Anniversary Highlights 1999-2024

     13 Sep 2024

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     Dark Matter: The invisible hand guiding galaxies and warping spacetime.

     13 Sep 2024

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