In the far future, the universe will be mostly invisible

If you look out on the sky on a nice clear dark night, you’ll see thousands of intense points of light. Those stars are incredibly far away, but bright enough to be seen with the naked eye from that great distance—a considerable feat. But what you don’t see are all the small stars, the red dwarfs, too small and dim to be seen at those same distances.

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Tau.Neutrino said:

In the far future, the universe will be mostly invisible

If you look out on the sky on a nice clear dark night, you’ll see thousands of intense points of light. Those stars are incredibly far away, but bright enough to be seen with the naked eye from that great distance—a considerable feat. But what you don’t see are all the small stars, the red dwarfs, too small and dim to be seen at those same distances.

more…

In the realy far future, there will be no matter

dv said:

Tau.Neutrino said:

In the far future, the universe will be mostly invisible

If you look out on the sky on a nice clear dark night, you’ll see thousands of intense points of light. Those stars are incredibly far away, but bright enough to be seen with the naked eye from that great distance—a considerable feat. But what you don’t see are all the small stars, the red dwarfs, too small and dim to be seen at those same distances.

more…

In the realy far future, there will be no matter

No matter.

;)

dv said:

Tau.Neutrino said:

In the far future, the universe will be mostly invisible

If you look out on the sky on a nice clear dark night, you’ll see thousands of intense points of light. Those stars are incredibly far away, but bright enough to be seen with the naked eye from that great distance—a considerable feat. But what you don’t see are all the small stars, the red dwarfs, too small and dim to be seen at those same distances.

more…

In the realy far future, there will be no matter

Yes there will. Unless protons decay, baryonic matter (ie. planets) will be around forever. If protons do decay, then leptonic matter (ie.electrons and neutrinos) will be around forever. …

… for small values of “forever”.

For large values of forever, quantum tunnelling will create black holes from ordinary matter, until we get a mass balance between material falling into black holes and material radiating from black holes.

But we’re never going to get anywhere near large values of forever because the metastability of the universe is going to create an almighty explosion at much smaller timescales than that.