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6 September, 15:46

Explain how we know dark matter exists if we cannot see it

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  1. 6 September, 16:00
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    Gravitational lensing is how we know there is dark matter

    What this means is that the light is bending as the light travels from the source to the observer, and if there are any 'holes' in between the beam, that is where 'dark matter' exists
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