Particle Physics: Part 9: 95% of the universe is missing! #physics #science #cosmology #shorts

Added: 2026-05-28

[00:00:00]Congratulations. You have officially mastered the standard model of particle physics. You know all about baryonic matter, fermions, and force-carrying bosons. But, here is the ultimate cosmic plot twist. Everything we have discussed so far only accounts for a pathetic 5% of the universe. Welcome to episode 9, where we unmask the invisible anomalies.

[00:00:21]The remaining 95% of reality is completely missing from our textbook equations, hidden in the dark. How do we know this hidden reality exists? It started with galactic rotation curves.

[00:00:33]When astrophysicists measured the velocities of stars orbiting the edges of spiral galaxies, they noticed a massive anomaly. According to Newtonian gravity, these outer stars should fly off into deep space because there is not enough visible matter to hold them.

[00:00:47]There must be an invisible, non-baryonic halo providing the extra gravitational pull.

[00:00:52]Physicists call this missing gravitational scaffolding dark matter.

[00:00:56]Because it does not interact with the electromagnetic force, it emits, absorbs, and reflects absolutely zero light. It is completely invisible to our telescopes. Right now, particle physicists are hunting for the hypothetical fundamental particle behind it. Leading candidates, like weakly interacting massive particles or WIMPs, and ultra-light axions. These theoretical particles slip right through ordinary matter like ghosts. Dark matter acts as a massive cosmic skeleton. Even though it is completely invisible, its gravitational fingerprint dictates where regular baryonic matter clumps together.

[00:01:31]It acts like a gravitational anchor, drawing gas and dust into its dense structural walls to form the vast cosmic web. Without this hidden dark matter scaffolding pulling the strings from the shadows, galaxies, stars, and planets would have never been able to form.

[00:01:47]If dark matter is pulling the universe together, an even stranger entity is ripping it apart, dark energy.

[00:01:54]Accounting for a whopping 68% of the cosmos, dark energy is a smooth, uniform pressure inherent to the vacuum of space itself. It acts like an anti-gravitational force, driving the accelerated expansion of our universe.

[00:02:07]It pushes galaxies away from each other at an exponentially increasing rate across cosmic time.

[00:02:13]We are living in a universe ruled by ghosts and shadows. The standard model is an incredible map, but it is clear we have only decoded the cosmic dust jacket. Ready to see how physicists plan to solve this mystery and unite all forces under one single equation? Hit that follow button and let's explore the frontiers of the theory of everything in our final episode. Stay curious.