Hi-tech

[King Phenomenon]

We can observe 46 1/2 billion light years away with technology. My question is in regards to the unknown universe and it having an estimated 7 trillion light year diameter. So are there any promising technologies that will be able to observe 3 1/2 trillion light years away or is it highly improbable at this point?

 

[beenherebeforeagain]

I think you're referring first to the "cosmic horizon"

Cosmological horizon - Wikipedia

In theory, there is cosmos beyond that distance, but none of the photons emitted at that distance will ever reach Earth and our telescopes.

Where does the figure for a 7 trillion light year size for the universe come from?

Anyway, limited by the speed of light, there is no way for us to detect anything farther away than the cosmological horizon.

The exception would be if some kind of faster-than-light technology or process is discovered...which is entirely speculative at this point.

 

[King Phenomenon]

I think you're referring first to the "cosmic horizon"

Cosmological horizon - Wikipedia

In theory, there is cosmos beyond that distance, but none of the photons emitted at that distance will ever reach Earth and our telescopes.

Where does the figure for a 7 trillion light year size for the universe come from?

Anyway, limited by the speed of light, there is no way for us to detect anything farther away than the cosmological horizon.

The exception would be if some kind of faster-than-light technology or process is discovered...which is entirely speculative at this point.

Bayesian model averaging estimates it at 7 trillion