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Vera Rubin's Careful Discovery
- Vera Rubin observed stars at the edges of galaxies moving too fast to be explained by known gravity.
- She carefully collected extensive data instead of jumping to conclusions, setting the foundation for dark matter research.
Dark Matter's Invisible Gravity
- The stars' unusually high speeds suggested an invisible source of gravity named dark matter.
- This dark matter outweighs all normal matter combined but remains completely unseen.
Dark Matter Particle Mystery
- Dark matter is hypothesized to be a particle that doesn't interact like normal matter.
- It passes through matter mostly undetected, making it challenging to observe directly.