Archive · 24 Jun 2025
Dark Matter: The Unseen Substance Holding the Universe Together
Imagine the universe has a hidden structure, like scaffolding, that we can't see.
This is dark matter, and it makes up most of the stuff in the universe!
Scientists have been trying to find out what it is, but it doesn't shine or interact with light, making it invisible to our telescopes.
They've looked for tiny particles called WIMPs and used giant machines, but haven't found them yet.
Some scientists think our understanding of gravity might be wrong, or maybe dark matter is made of something super tiny.
It's a big puzzle, and finding the answer could help us understand how the whole universe works!
Dark matter, making up about 27% of the universe, neither emits nor absorbs light and is undetectable by traditional telescopes.
Scientists have been searching for dark matter for decades, but have yet to definitively identify what it is made of.
One hypothesis is that dark matter is composed of WIMPs, weakly interacting massive particles, but experiments haven't confirmed their existence.
Another theory explored supersymmetry, but the Large Hadron Collider did not find predicted particles.
The nature of dark matter remains a mystery, with scientists exploring alternative explanations and questioning the understanding of gravity itself.
- Who
- Scientists, including Fritz Zwicky, and physicists are searching for and studying dark matter.
- What
- A form of matter that doesn't interact with light, making it invisible, yet it exerts a gravitational pull.
- When
- Scientists began looking for dark matter in 1933.
- Where
- In the universe; experiments are conducted in deep underground labs.
- Why
- To understand the structure, formation, and forces within the cosmos.
Current Scientific View
Alternative Theories
Nature of Dark Matter
Current Scientific View
Dark matter is made up of particles that scientists have yet to detect.
Alternative Theories
The current theories of gravity may need to be revised if dark matter doesn't exist.
- Percentage of Universe
- Dark matter makes up ~27%
- First observed
- 1933
- Key Characteristics
- Does not emit or absorb light
- Potential components
- WIMPs, axions or particles in a hidden 'dark sector'
- Experiments
- Deep underground labs, Large Hadron Collider