Is the universe infinite?
Nobody knows for sure whether the universe is finite or infinite, bounded or unbounded, flat or curved, singular or multiple. In fact, beyond what we can see in the 'observable universe' we know absolutely nothing for certain of what lies beyond.
What is the limit of the universe?
The comoving distance from Earth to the edge of the observable universe is about 14.26 gigaparsecs (46.5 billion light-years or 4.40×1026 m) in any direction. The observable universe is thus a sphere with a diameter of about 28.5 gigaparsecs (93 billion light-years or 8.8×1026 m).
Is the universe truly infinite?
There's a limit to how much of the universe we can see. The observable universe is finite in that it hasn't existed forever. It extends 46 billion light years in every direction from us. (While our universe is 13.8 billion years old, the observable universe reaches further since the universe is expanding).
Is it possible for there to be infinite universes?
Possible worlds and real worlds
For example, over infinite time there could, in some potential theories, be infinite universes, but only a small or relatively small real number of universes where humanity could exist and only one where it ever does exist (with a unique history).
Is anything proven to be infinite?
The set of all particles in the universe is infinite - in the sense that it has a countably infinite cardinality. That said, you can prove or disprove these properties for abstract mathematical objects but you can't prove them for physical objects in the same way.
What is beyond universe?
Outside the bounds of our universe may lie a "super" universe. Space outside space that extends infinitely into what our little bubble of a universe may expand into forever. Lying hundreds of billions of light years from us could be other island universes much like our own.
Why does the universe have limits?
The limits to which we can observe the Universe are set by three things: the rate of expansion, the time since the Big Bang, and the speed of light.
Will I exist again if time is infinite?
Thus, everything that has existed still exists, and everything that will exist already exists, just not in the state(s) it did or is going to. And even if time is infinite you would not be born again. An exact copy of you might have existed or might exist in the future, but not exactly you.
Did Einstein think the universe was infinite?
In contrast to this model, Albert Einstein proposed a temporally infinite but spatially finite model - static eternal universe - as his preferred cosmology during 1917, in his paper Cosmological Considerations in the General Theory of Relativity.
Does space go forever?
In theory, space goes on and on…
It's because of the shape of space. Our part of space, or the observable universe, has a special shape: it is flat. That means if you and a friend each had your own rocket ship and you both took off and travelled in a straight line, forever and forever, you would never meet.
Do parallel universe exist?
Like the Many-Worlds theory, string theory demonstrates that parallel universes exist. According to the theory, our own universe is like a bubble that exists alongside similar parallel universes. Unlike the Many-Worlds theory, string theory supposes that these universes can come into contact with one another.
Are we in a multiverse?
Within this framework, Earth could exist in various forms across these different universes. However, the existence of a multiverse is currently a theoretical concept in physics and cosmology, and there is no direct empirical evidence to confirm its existence.
What is our universe called?
Universe is a name given to all the matter around us. Our universe is also called the cosmos. It is originally a greek word. In early days it was thought that our Galaxy constituted the entire universe.
What is this ∞?
What is the symbol of infinity? The symbol of infinity is ∞.
Are black holes infinite?
A black hole has an infinite density; since its volume is zero, it is compressed to the very limit. So it also has infinite gravity, and sucks anything which is near it!
What comes after infinity?
"There is no numbers after infinite." Hi Arun, Infinity is not a number. It is a concept of an object that is larger than any real number that does not have a finite end in the sequence.
Who created the universe?
According to the Book of Genesis, God created the universe - and all the heavenly bodies, the sun, the moon, and the stars - in six days. But according to contemporary cosmologists the universe began with a great explosion known as the Big Bang, after which the stars and galaxies slowly formed over billions of years.
What was before the universe?
The universe materialized literally out of nothing, at a tiny but finite size, and expanded thereafter. There were no moments before the moment of smallest size because there was no “before.” Likewise, there was no “creation” of the universe, since that concept implies action in time.
What comes after space?
Some people think that the universe is infinite – meaning it goes on forever, in every direction. In this case, there is nothing after space, because space is everything. But even if the universe did have an end, it might be very difficult for us to figure out where the edge is.
Are we alone in the universe?
The idea of being alone in the universe is infinitesimally small. Our earth, over a trillion cubic kilometers, is one of eight planets orbiting the sun, which is thousands of times larger. According to NASA, there are probably THOUSANDS of solar systems in the milky way, the galaxy we live in.
Does space have speed?
But Einstein showed that the universe does, in fact, have a speed limit: the speed of light in a vacuum (that is, empty space). Nothing can travel faster than 300,000 kilometers per second (186,000 miles per second). Only massless particles, including photons, which make up light, can travel at that speed.
What shape is the universe?
Most cosmological evidence points to the universe's density as being just right — the equivalent of around six protons per 1.3 cubic yards — and that it expands in every direction without curving positively or negatively. In other words, the universe is flat.
Can a human go back in time?
The Short Answer:
Although humans can't hop into a time machine and go back in time, we do know that clocks on airplanes and satellites travel at a different speed than those on Earth. We all travel in time! We travel one year in time between birthdays, for example.
Can humans exist without time?
There are no clocks in the forest or the ocean. The only concept of time in these areas is the space time continuum. The moment ,from The Big Bang on , that's not on a time clock. Humans can even exist in the wild without a clock there is no need for one.
Can time exist without reality?
To many physicists, while we experience time as psychologically real, time is not fundamentally real. At the deepest foundations of nature, time is not a primitive, irreducible element or concept required to construct reality.
References
- https://www.astronomy.com/science/what-shape-is-the-universe/
- https://www.swinburne.edu.au/news/2021/08/Is-space-infinite-we-asked-5-experts/
- https://theconversation.com/curious-kids-what-comes-after-space-209903
- https://en.wikipedia.org/wiki/Multiverse
- https://www.vedantu.com/question-answer/what-is-our-universe-called-class-10-physics-cbse-605045c864254c3b01ca85dd
- https://en.wikipedia.org/wiki/Static_universe
- https://byjus.com/maths/infinity/
- https://physics.stackexchange.com/questions/25802/why-does-a-black-hole-have-a-finite-mass
- https://en.wikipedia.org/wiki/Observable_universe
- https://www.quora.com/Can-something-exist-without-time
- https://philosophy.stackexchange.com/questions/70861/probability-of-something-given-that-time-will-exist-forever
- https://science.howstuffworks.com/science-vs-myth/everyday-myths/parallel-universe.htm
- https://www.pbs.org/faithandreason/intro/cosmo-frame.html
- https://preply.com/en/question/what-is-more-than-infinity-83244
- https://www.abc.net.au/education/does-space-go-on-forever/14053466
- https://www.reddit.com/r/Astronomy/comments/10jn2xw/are_we_alone_in_this_universe/
- https://www.physicsforums.com/threads/is-anything-in-the-physical-world-infinite.1013346/
- https://www.space.com/29859-the-illusion-of-time.html
- https://bigthink.com/starts-with-a-bang/universe-infinite/
- https://www.quora.com/What-Earth-are-we-in-the-multiverse
- https://observatory.astro.utah.edu/universe.html
- https://harpers.org/archive/2016/01/what-came-before-the-big-bang/
- https://www.amnh.org/exhibitions/einstein/light/cosmic-speed-limit
- https://spaceplace.nasa.gov/time-travel/en/
