- What is outside the universe?
- Will the universe be reborn?
- Does time have an end?
- Where does space end?
- What is beyond the end of the universe?
- What was before the universe?
- Can we stop the heat death of the universe?
- What happens after the big rip?
- How long until the universe ends?
- Is the universe infinite?
- Will we ever travel faster than light?
- Does Infinity exist in reality?
- Can the universe suddenly end?
- What happens when you reach the end of space?
- What’s inside a black hole?
What is outside the universe?
Encountering the Unknown Despite its strangeness, this first idea is one of the easiest to digest.
Astronomers think space outside of the observable universe might be an infinite expanse of what we see in the cosmos around us, distributed pretty much the same as it is in the observable universe..
Will the universe be reborn?
The universe could bounce through its own demise and emerge unscathed. A new “big bounce” model shows how the universe could shrink to a point and grow again, using just the cosmic ingredients we know about now.
Does time have an end?
According to Einstein’s General Relativity, which is our best current description of space and time, the only place where time – and also space – ends is in a so-called singularity. This involves gravitational forces becoming so intense that space and time lose all meaning.
Where does space end?
No, they don’t believe there’s an end to space. However, we can only see a certain volume of all that’s out there. Since the universe is 13.8 billion years old, light from a galaxy more than 13.8 billion light-years away hasn’t had time to reach us yet, so we have no way of knowing such a galaxy exists.
What is beyond the end of the universe?[+] In our own backyard, the Universe is full of stars. But go more than about 100,000 light years away, and you’ve left the Milky Way behind. Beyond that, there’s a sea of galaxies: perhaps two trillion in total contained in our observable Universe.
What was before the universe?
The initial singularity is a gravitational singularity predicted by general relativity to have existed before the Big Bang and thought to have contained all the energy and spacetime of the Universe.
Can we stop the heat death of the universe?
Heat death doesn’t occur until you reach maximum entropy, which is something that you can hold off indefinitely if you’re able to pull in even relatively small (say, on the order of an M-class star) clumps of matter every few billion years.
What happens after the big rip?
After the Big Rip Matter is present, but it’s dispersed, as atoms are ripped apart in the final milliseconds before the rip. If acceleration continues, infinitesimal, formless bits of matter could continue to disseminate on an atomic level, with no hope of ever being put back together.
How long until the universe ends?
about 5 billion yearsAccording to the formulas used to calculate cutoffs, a universe that is 13.7 billion years old will reach its cutoff in about 5 billion years, his team concludes. For most people, the idea that a mathematical tool could be elevated to a real-world event might seem strange, but there are precedents for it in physics.
Is the universe infinite?
The observable universe is still huge, but it has limits. … That’s because we know the universe isn’t infinitely old — we know the Big Bang occurred some 13.8 billion years ago. That means that light has had “only” 13.8 billion years to travel.
Will we ever travel faster than light?
The fact is we’ll never be able to travel beyond the speed of light, at least based on our current understanding of established physics. … The LHC, the largest and highest-energy particle accelerator we have, boosts protons as close to the speed of light as we can get, but they never quite hit the mark.
Does Infinity exist in reality?
Great mathematicians, like Gauss or Pointcaré, said that actual infinity does not exist. What it is called infinity is only an endless process. By contrast, Cantor believes that actual infinity exists. Any argument for or against the actual infinity will be welcome.
Can the universe suddenly end?
As long as the amount of stuff doesn’t go over a critical threshold, the universe will continue to expand forever, and eventually suffer heat death, freezing out. But if there’s too much stuff, the expansion of the universe will slow down and stop. Then the universe will begin to contract.
What happens when you reach the end of space?
Once we reached the ‘end’, we would only see blackness, a void, with nothing there. The universe is ever expanding, so we would never see anything ahead of us, rushing ‘outwards’, but if we were to look back, to where we came from, we would see stars and galaxies approaching us.
What’s inside a black hole?
The event horizon is where the escape speed exceeds the speed of light: you’d have to be going faster than light (which is impossible for any bit of matter) to escape the black hole’s gravity. Inside the event horizon is where physics goes crazy. … A singularity is what all the matter in a black hole gets crushed into.