Dark Energy Makes Giants of Our Ancestors

By ooorg

26 Jan 2020

Dark Energy is the name for the force believed to be behind the acceleration of the expanding Universe. Instead of slowing down, as previously thought, the Universe's expansion has been observed to be speeding up. The light emanating from astronomical entities were seen to have greater redshift the further they were away from the observer, meaning that the further away an object was, the faster it was going.

It was assumed that the entities were to slow down because it was thought that the Big Bang was an explosion. Explosions, or at least those the Big Bang was analogous to, were normally viewed on Earth. They send matter outwards due to the energy created by it, only for that matter to eventually be taken over by Earthly gravity.

The Big Bang was named before the discovery of the acceleration of the Universe's expansion, and because it was discovered that the Universe was simply expanding. If everything was moving away from each other then it was thought that they were all moving away from a centre. A centre of the Universe. And as they were all moving through time as well as space then there would have been a point when they were all together in one place. And the best way of describing all the stuff in the Universe moving away from one single point was an explosion, or 'Big Bang'.
Illustration: Ooorg
However, it seemed afterwards that it wasn't like an explosion, as the things flying through space were speeding up, unlike a normal explosion which the theory was named after.

In fact before everybody thought the expanding Universe was going to slow down, and, before it was named after an explosion, it was thought that the Universe was stationary. Well that is much more comforting at least. And before that, well I think people had always thought the Universe to be stationary. Einstein had even discovered that indeed the Universe was expanding but he thought it was a mistake, and corrected his calculations with a formula signified by the symbol ?, to counter the correct calculations that the Universe was indeed expanding 'outwards'.

Einstein's cosmological constant is now analogous with the theory of Dark Energy, a hypothesis which, too, is in place to make up for the fact that there is a gap in our understanding on the Universe's expansion. Only instead of correcting and stabilising the Universe, Dark Energy is there to help understand the observations of the acceleration of this expansion.

There was a time when the Earth was thought to be the centre of the Universe, which I suppose is pretty understandable. I can understand why anybody would think even they are at the centre of the Universe. But subsequent observations have given a different impression. When it was observed that distant cosmological entities (very bright and therefore observable objects eg galaxies, supernovae, pulsars etc) were moving away it would have been noted that they were all moving away from Earth, in all directions, surely making it seem that if you were to try and pinpoint the 'centre' from which everything emanated, then it would be the Earth itself (or even the viewer)? But, as that was a rather old idea, it was not considered as scientific.

Actually as everything had been observed to be moving away from each other it was more likely that, instead of a traditional explosion, there was no actual centre of the Universe, rather that the Universe was once very small and now it is very big.

That is to say that everywhere is the centre of the Universe. Where we are in space now, that was part of that once-centre, the Big Bang. The very space it occupied has stretched out. Dark Energy theory says that space itself is expanding. This explains why things are getting further away from each other. It's not like an explosion at all. In fact everything is stationary, but instead the space in between everything is getting bigger for some reason. Dark Energy is what we call the thing that might be doing that.

It seems Dark Energy is spoken about existing out there, in space, between all the galaxies, which is why they are being pushed apart. But that space exists inside of all matter, does it not? If the Universe is truly expanding in the way I have just described then it would not just be the space inbetween that is expanding, but the matter itself. If that were the case, and the Universe is much bigger today than it was in the past, then aren't we giants compared to our ancestors? It is impossible to make a comparison but mind-boggling to think that, perhaps, we are tens or hundreds of times bigger than people from ages ago. Impossible to make a comparison because our measuring sticks would have grown too.

Indeed, if everything in the Universe is expanding - that is all matter itself not just outer space - then we are bigger today than we were yesterday, even if it is by only a tiny amount. The only thing is we would not be able to tell because everything else is bigger. This would negate the observation of an expanding Universe: if everything were expanding it would not be observable (in the way that has seen the galaxies moving ever further apart). In which case Dark Energy must only work its magic on the space where there is no gravity or gravity-influenced (baryonic) matter. Thus it is very aptly named. Not just because we cannot see it or understand it, but because it only works out in the darkness of space.

So, it seems that the space inbetween our galaxies has only expanded, instead making us tiny in comparison with our ancestors relative to the size of the Universe (the life-span of humanity is so small in comparison with the cosmos that hardly much has changed in that time relative to the whole history of the Universe, however). Our present day cosmology fits in with those of our ancients - that Giants once lived on the Earth and we are tiny in their comparison.