Nye explores possibility of gate travel

ah..

The stargate is technically a transverable wormhole. Matter as we know it can not survive a blackhole.

Transverable wormholes are closely related to the tunnels Enstien Rosen postilate, so called Einstien Rosen bridges.

perhaps the primier researcher in the area of transversable wormholes is Kip thorne. Although the verdict is still out on the possibility of these passages and is likely to be for some time until we have a better understanding of the processes involved. The basic premise as far as a star gate device is concerned, is to find one of these small primordial wormholes left over from the early universe, inject some kind of exotic matter into it to prop open the throat of the wormhole and somehow navigate through it before it collapses. there is nothing in general reality to prevent this. However some opposing views say that there would be a build up of virtual particle pairs which would make the hole very unstable and collapse it before any ship could transverse it. Again only a really good understanding of the nature of the universe is going to answer that question.

Thorne , garivation and warped space time is a good read, another good book that takes a different approach using brane geometries is warped passages by Lisa Randel. Also a nice explanation of m-thoery.

Stargate takes a novel approach is that a physical entitiy doesn't really enter the wormhole but the physical person or ship is converted to energy and tranported through the passage startrek transporter style.

This form of teleportation is unlikely but no longer impossible. A few years ago it was thought that any form of teleporation violated what is called the conservation of baryons, I won't go into detail on this, just understand that this was considered to be a fundumental law that prevented any form of teleportation along with the heisenberg uncertainty priniciple which says simply you cannot measure both the momentum and position of a particle. Changing one or the other upset the system. Quantum entanglement changed that. Now it is likely in the next hundred years humans will be able to sucessfully teleport something the size of a virus. Anything larger remains an insurmountable engineering problem. But the concept has moved from being a physical law violation to an "engineering problem" in less than 100 years.

So who to say a civilization with the capacity of the ancients, probably an emergent type III civilization (we are about a type .5) couldn't figure out a way to capture and enlarge a primordial wormhole, and send an entangled object through the open gate.

The chance of humanity developing this type of tech in less than a million years is small, however there is always the possibility somewhere out in the solar system is the remnants of someone elses efforts.