Science ‘N’ Stuff: The Big Bang Might Not Exist, And The Universe Might Literally Be Forever – Where Are My Physicists At?!
There’s a new model that hypothesizes that the universe did not start with the Big Bang, and that, in fact, the universe has no beginning or end in time. Like, the universe never started, and the universe is never going to end.
I’ll do my best to explain this, not being a physicist or astronomer: The current model, the model that says that there was a Big Bang, is based on geodesic equations, which trace the shortest path between two points on a curved surface. A scientist and philosopher named David Bohm started creating models in which he replaced geodesic equations with quantum equations. Quantum mechanics, as I am given to understand, deals with subatomic particles, or in other words, very small things, and is better at explaining some physical phenomena than classical equations, which deal with physics at relative to a size that’s more familiar to human beings.
Physicists Ahmed Farag Ali and Saurya Das, from Benha University and the University of Lethbridge, have replaced the geodesic trajectories that have previously been used to explain the movement of the universe with quantum trajectories. Particles on geodesic trajectories intersect, and when they do, something like the Big Bang would happen (called a “singularity”). With geodesic trajectories, there is the possibility that eventually, the universe would collapse in a “Big Crunch.”
Quantum trajectories do not intersect, therefore there are no singularities, therefore, under this model, THE BIG BANG NEVER HAPPENED. And if the Big Bang never happened, and the Big Crunch will never happen, it means that the universe has existed forever and will exist forever. Is your mind blown yet?!
Other interesting things about Ali and Das’s model: The universe would have a finite size.The model would also solve the problem of dark matter; in it, dark energy doesn’t exist, and the universe is filled with a quantum fluid composed of gravitons, or “massless particles that mediate the flow of gravity.” All of their hypotheses seem to check out when weighed against current observations.
So, I have so many questions! My mind is all over the walls, it is so blown!
- What does this mean for our notion of time? Like, if we’ve been conceptualizing time as if it has a starting point, of sorts, that originates in the Big Bang, but that starting point doesn’t exist – what does that mean?
- If the Big Bang never happened, and the universe has a finite size, does that mean that the universe is not expanding? And then, how do we account for observations that our planet or solar system or whatever seems to be moving further away from certain other points in space?
- If we aren’t necessarily moving further away from other planets/stars/solar systems/galaxies, does that improve our chances to eventually move the human race off of this planet and onto some other life-bearing planet? What does this do to space travel?
- If this will force us to re-evaluate our concept of time, oh my god, what does this do to time travel?
- Guys, does this mean that life – as a general concept – will go on forever?
- As Claire put it, what even is forever, if forever is all there is?
- Can someone explain this whole graviton thing to me, please? How exactly do they mediate the flow of gravity? What would that mean in terms of the formation of stars and planets? (My understanding is that stars and planets are formed by an overwhelming force of gravity bringing particles together.)
- Whoa, whoa, whoa – what do gravitons mean for black holes? (My understanding is that black holes are centers of such immense gravity that nothing can escape their pull.)
OH MY GOD, SCIENTISTS, PLEASE ANSWER MY QUESTIONS, I AM SO HYPED UP ON MY TINY KNOWLEDGE OF ASTRONOMY RIGHT NOW. PLEASE AND THANKS.
Send me a line at [email protected], especially if you are a scientist who can explain all of this, or even part of this, to me.