How The Universe Messes With Your Holiday
The problem with going on holiday is that you never quite leave things behind. You pack your bags, you check your passport, you make sure the cat has enough tuna to last a fortnight, and yet, somehow, the moment you step onto the beach, you find that the Universe has decided to go on holiday with you.
Only, unlike you, the Universe doesn’t have a budget, a tour operator, or even a particularly clear idea of where it’s going. It just expands. And not just expands—it accelerates.
Scientists, who are generally very keen on measuring things that don't need measuring, have calculated that the Universe is expanding at an ever-increasing rate. They call this "Dark Energy," which sounds terribly ominous and implies a brooding, goth-like presence at the heart of reality, when in fact it behaves rather more like a toddler who has discovered they can run faster if they stop looking at where they’re going.
It is, quite frankly, very rude. Imagine you are sitting on a sun lounger, having finally secured a decent spot by the pool—not too close to the children, but within striking distance of the bar. You open your book, you adjust your sunglasses, and you settle into a state of contented equilibrium. You have achieved, for a brief, fleeting moment, a perfect cosmic stillness.
Then, without so much as a polite cough, the lounger begins to slide.
It doesn't just slide; it slides faster and faster away from the pool, away from the bar, and away from the sun, accelerating toward a distant horizon at a speed that makes the concept of "check-out time" seem laughably bureaucratic. You try to grab your towel, but the space between you and the towel is expanding so rapidly that your arm would need to be several million light-years long just to reach the hem of it.
This is the accelerating universe. It is the ultimate "extended stay" package where the hotel keeps adding rooms in front of you, faster than you can walk through the lobby, until eventually, you are so far from the buffet that you couldn't possibly hope to get a croissant before the heat death of your breakfast.
The standard cosmological model—which sounds like a very dull brochure for a very overpriced holiday resort—suggests that this runaway expansion has been going on for about 5 billion years. That’s a long time to be stuck at an airport gate that keeps moving further away.
Some theorists have suggested that maybe, just maybe, the Universe might decide to stop and contract—a "Big Crunch". They imagine the Universe as a giant, cosmic elastic band that will eventually snap back to its original shape. This would be like the Universe realising it’s left the stove on, panic-packing its bags, and rushing home to check if the front door is locked.
But most evidence suggests that this isn't happening. The Universe is simply enjoying its holiday far too much to return home. It has found a nice spot, it has ordered a drink with a little paper umbrella, and it has decided that the best way to avoid having to pay the bill is to simply increase the distance between itself and the waiter until the waiter becomes a historical footnote.
So, the next time you find yourself staring at a sunset and feeling the creeping dread that you have forgotten to do something important, take comfort in the fact that the Universe is currently doing exactly the same thing. It is running away from its responsibilities at an exponential rate, and it hasn't the slightest idea where it’s going either.
Just make sure you know where your towel is. It might be the only thing you have left to hold onto as everything else vanishes over the horizon.