[ExI] The Planck era: Imagining our infant universe

BillK pharos at gmail.com
Sat Apr 23 00:07:01 UTC 2022

On Sat, 23 Apr 2022 at 00:48, William Flynn Wallace via extropy-chat
<extropy-chat at lists.extropy.org> wrote:
> Is dark matter still just hypothetical?  bill w
> _______________________________________________

In the sense that we don't know what it is, then yes.
We can see the gravitational effects that hold spinning galaxies
together, but we can't see any physical matter causing those
gravitational effects, so we call it 'dark matter'.


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