If dark matter is 'invisible,' how do we know it exists?

Despite making up most of the matter in the universe, dark matter doesn

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Dark Matter

What is dark matter?

What is dark matter?

How Dark Matter Works

Dark Matter

How We Know Dark Matter Exists The Evidence for Modern Physics

What is dark matter?

We don't know if dark matter exists. So why do astronomers keep

Dark matter & dark energy (Part 2) – Understanding the nature of dark matter and dark energy

Dark Matter