What is Dark Matter?

Have you ever wondered what dark matter is? Astronomers discovered a strange problem when studying galaxies: the visible matter we see-like stars and gas-wasn’t enough to explain why galaxies stay bound together. Something mysterious, yet invisible, must be providing the extra gravitational pull.
In this video, we explore the fascinating evidence for dark matter:
🌌 Why stars in galaxies don’t fly apart.
🔭 How light bends due to invisible mass (gravitational lensing).
📊 The surprising discovery that dark matter makes up 70-80% of a galaxy’s mass.
Dark matter is all around us, shaping galaxies, clusters, and even the universe itself. But what exactly is it? And why can’t we see it? Join us on this journey to uncover one of the greatest mysteries of the cosmos!
🎥 Watch now to learn more about dark matter’s role in the universe!
👉 Don’t forget to like, share, and subscribe for more videos exploring astronomy, science, and the universe.
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Music:
Airport Lounge - Disco Ultralounge by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 license. creativecommon...

[@shawns0762]

Dark matter is regular mass that is dilated. Dilation/gamma is the phenomenon our high school teachers were talking about when they said "mass becomes infinite at the speed of light". This does not mean mass increases, it means mass becomes spread throughout spacetime relative to an outside observer. Time dilation is just one aspect of dilation, it's not just time that gets dilated. Even mass that exists at 75% light speed is partially dilated.
It occurs wherever there is an astronomical quantity of mass. This includes the centers of very high mass stars and the overwhelming majority of galaxy centers.
Our own galactic center is dilated. This means that there is no valid XYZ coordinate we can attribute to it, you can't point your finger at something that is spread throughout spacetime. In other words that mass is all around us. It's the "missing mass" needed to explain galaxy rotation curves.
Dilation does not occur in galaxies with low mass centers because they don't have enough mass to achieve relativistic velocities. It has been confirmed in 6 ultra diffuse galaxies including NGC 1052-DF2 and DF4 to have no dark matter. In other words they have normal rotation rates.