There may be other worlds out there. Where there could be an exact copy of our solar system, our Earth and each one of us. The Universe s3e2: Parallel Universes, History 2009
The universe sits in a sea of parallel universes. ibid.
Remarkably, there may be four types of parallel universe out there: one could exist in exactly the same space that we are in, but it is so far away we cannot see it or reach it. In another scenario, multiple giant universes could exist in giant cosmic soap bubbles adrift in a cosmic sea of giant bubbles. In yet another scenario, many parallel universes occupy the same space and times as our universe, but because they are in different dimensions, they are invisible. In yet another, all the laws of physics are different so everything looks completely different. ibid.
The Wmap seems to show that the universe is flat. ibid.
‘We are children of the bubble.’ ibid. Tegmark
When In the 1980s scientists came up with a lyrical-sounding idea – String Theory – it promised to solve all the mysteries of the universe, including whether or not parallel universes are real. The idea is that all particles are not solid points or dots, as science said they were. Instead, if you could see up close, particles are in fact tiny string-like objects that individually vibrate in various ways ... String Theory has now evolved into M or membrane theory. ibid.
The crowning achievement of M Theory came when scientists realised that to make sense of everything, you need to think of the universe as existing in eleven dimensions. M Theory explains how the tiniest as well as the biggest things in the cosmos work. It also proposes that we all live on a giant and energetic membrane. Our universe is tethered to this wall by extra dimensions ... These membranes are also very close to each other. ibid.
Are alien visitors coming to earth in spacecraft? Or could some be coming here from other means? There are those who believe that not all close encounters are of the physical kind. And that alien contact often happens without our knowledge. And leaving no trace. Ancient Aliens s14e11: The Trans-Dimensionals
Extraterrestrials appearing and disappearing and moving between dimensions. ibid.
Many who use these drugs believe they connect them to an even greater reality. ibid.
See you later. Ace. What a guy. Red Dwarf s4e5: Dimension Jump, Dave flight engineer to Rimmer ace pilot
Smoke me a kipper – I’ll be back for breakfast. ibid. alternative Rimmer
For every decision that’s made, an alternative decision is played out in another reality. ibid. Bongo to Ace Rimmer
The name’s Commander Rimmer. Arnold Rimmer. Friends call me Ace. I’ve come from another dimension. ibid. Ace
In the decades that followed Ace Rimmer searched countless realities and met thousands of different Arnold Rimmers. However, he never encountered an Arnold Rimmer as deeply sad and worthless and the one he’d met aboard Red Dwarf. His impossible search continues. ibid. caption
The possibility that there are extra as yet undiscovered dimensions to space. Additional hidden directions. The Entire History of the Universe e16: Where Are All the Hidden Dimensions?
What would this mean? Where would such dimensions exist and what would they look like? How could we ever detect them?
One obscure and oddball idea seemed to require for consistency the existence of extra dimensions. This idea was String Theory. String Theory has a justified reputation as a difficult and complex subject. ibid.
What does it even mean to talk about extra dimensions that we cannot see. ibid.