Comments on: The Incredible Shrinking Universe

By: JDog

JDog — Thu, 21 Jun 2018 01:00:43 +0000

it is just a theory just a theory guys may not happen and please really is scary right now

By: thespecialphysicist

thespecialphysicist — Thu, 26 Oct 2017 11:40:35 +0000

All that ‘s completely false simply because galaxies in the Local Group can’t get closer quicker than the speed of light (as they have mass/energy) and the space between them (which is indeed expanding faster than light) will make distances among them spread, at a faster pace than its gravitational attraction (whatever it is).

By: Lowell

Lowell — Wed, 10 May 2017 22:53:56 +0000

…would we not THEN be able to see part of the universe that otherwise physics claims as “UNobservable”?

By: Lowell

Lowell — Wed, 10 May 2017 18:07:43 +0000

…as a further point to my comment above, if the full universe were a billion times larger than the observable universe, and creating particle sized wormholes connect two random locations, then it would be more likely than not (one billion times more likely) that any wormhole you DO create would connect to a part of the universe that is currently deemed “unobservable”.

By: Lowell

Lowell — Wed, 10 May 2017 18:04:26 +0000

Brian, given the theoretical support for Einstein-Rosen bridges (aka “wormholes”), doesn’t that essentially expand the “observable universe” to, essentially, all quarters of the universe? For instance, suppose one opens just a particle-sized wormhole between here (our “center”) to a random location elsewhere in the universe, say 500 billion light years away (well past the current “observable” universe). If you then transport a quantum entangled particle to the other side, where its state is influenced by the other side of the universe, are we not able to observe it? Suppose that particle-sized wormhole is large enough for photons to pass through… would we not be able to see part of the universe that otherwise physics claims as “observable”?

By: mark slater

mark slater — Mon, 03 Apr 2017 10:31:48 +0000

In short I theorise that space appears to be expanding because the distances between galaxies are increasing, I theorise that this is because all galaxies are shrinking, because of fusion. Each galaxy is finding a ‘stable position’ to be in compared to the positions of other galaxies. It is not space that is expanding, it is being created, the motion of all galaxies is filling the space created. Galaxies are being pulled and pushed by their closest neighbouring galaxies (black hole), uniformly throughout the universe”

By: Neil Dickson

Neil Dickson — Fri, 10 Jun 2016 01:50:17 +0000

Sorry for the very late reply, but your comment got me thinking, and I thought you might be interested to know that it’s the frequency with which the universe expands by a factor of e (2.71828…). The reciprocal of 2.113e-18 Hz is 4.733e+17 s, so every roughly 15 billion years, it’d expand by a factor of e, if the rate stayed constant.

By: Val puoa

Val puoa — Sat, 07 May 2016 16:48:52 +0000

Hi. Last time I wrote to you about the shape of the universe. If you climb the shape of the universe of course your going to the find the point where were standing. were moving in that direction thats what causes climate change. For that change people blame NASA and science, its not true. Were climbing in a twisted area. Thanks.

By: Dr. Jon Overton (@realpj)

Dr. Jon Overton (@realpj) — Sat, 30 Apr 2016 05:34:05 +0000

Unless of course, the Alcubierre drive turns out to be something that can be successfully built and implemented. Given that drive makes use of a “bubble” of spacetime compressed in front of and expanded behind the ship, in theory it might exceed the speed of light as seen by an observer outside that bubble..

By: James

James — Sat, 30 Apr 2016 01:42:39 +0000

“20 km/s per million light years” — One could reduce the units to Hertz, which would give you about 2.113e-18 Hz. Does this have any real-world application, or is my brain just doing useless analysis?

By: thomas

thomas — Fri, 29 Apr 2016 17:23:25 +0000

Now this makes me sad!

By: M.Saiful Islam

M.Saiful Islam — Fri, 29 Apr 2016 14:06:12 +0000

Observations at the moment will never be the same at anytime in the future in space & time in ever expanding cosmos.