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Right I'm not questioning the differences between the two. I'm questioning how we know that the unseen stuff out there is regular matter vs Dark matter. Both ma
by crimsonalucard 9y ago
Right I'm not questioning the differences between the two. I'm questioning how we know that the unseen stuff out there is regular matter vs Dark matter. Both matter and dark matter can appear dark when not interacting with light or glowing.
According to my knowledge dark matter is identified through its gravitational properties. Matter and dark matter both are gravitational hence my curiosity on why we're identifying this unaccounted gravitational effect as "dark matter" rather than regular matter.
- arduinomancer 9y agoBecause you can have dark matter in a hot gas cluster which means it should heat up and be observable by its radiation spectrum. Also note dark matter isn’t black like normal matter in the absence of light. It’s literally transparent because it doesn’t interact with light.