- Does the Galaxy have an end?
- Are there other universes?
- How did time start?
- What is inside a black hole?
- Can humans travel to another galaxy?
- What galaxy do we live in?
- How far is it to the end of the universe?
- What happens when you reach the end of the universe?
- What was before the universe?
- Does space end somewhere?
- Can we see Edge of Universe?
- Does Infinity exist in reality?
- Does the universe repeat itself?
- Is Hubble still in space?
- Is Pi an infinite?
- What is the mathematical definition of infinity?
- Is the universe infinite?
- What is on the other side of a black hole?
- Where does space end?
- Will humans ever leave the Milky Way?
- Is Infinity impossible?

## Does the Galaxy have an end?

And now, NASA scientists say they know exactly when it will come to an end.

In a universe that is forever spreading apart, the Milky Way has been moving closer to celestial neighbor the Andromeda galaxy..

## Are there other universes?

In fact there are almost too many other potential universes. Physicists have proposed several candidate forms of “multiverse”, each made possible by a different aspect of the laws of physics. The trouble is, virtually by definition we probably cannot ever visit these other universes to confirm that they exist.

## How did time start?

According to the general theory of relativity, space, or the universe, emerged in the Big Bang some 13.7 billion years ago. … “In the theory of relativity, the concept of time begins with the Big Bang the same way as parallels of latitude begin at the North Pole.

## What is 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.

## Can humans travel to another galaxy?

Intergalactic travel for humans is therefore possible, in theory, from the point of view of the traveller. … Traveling to the Andromeda Galaxy, 2 million light years away, would take 28 years on-ship time with a constant acceleration of 1g and a deceleration of 1g after reaching half way, to be able to stop.

## What galaxy do we live in?

The Milky WayWe live in one of the arms of a large spiral galaxy called the Milky Way.

## How far is it to the end of the universe?

It’s Space Day, but traveling the vast entity that is space would take far longer than a single day. The nearest galaxy: 749,000,000 (that’s 749 million) years. The end of the known universe: 225,000,000,000,000 years (that’s 225 trillion) years.

## What happens when you reach the end of the universe?

However, once the universe reaches heat death, everything everywhere will be the same temperature. That means nothing interesting will ever happen again. Every star will die, nearly all matter will decay, and eventually all that will be left is a sparse soup of particles and radiation.

## 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.

## Does space end somewhere?

Your two rockets, travelling in a straight line, might eventually cross paths, or they might get really close but never meet, or perhaps they’d go the other direction and drift away from each other. But only flat space will keep the rockets exactly apart.

## Can we see Edge of Universe?

Note that humans can only see part of the entire universe. We call this part the “observable universe.” Since light travels at a finite speed, it takes a certain amount of time for light to travel a specific distance. … Since our observable universe is not infinite, it has an edge.

## Does Infinity exist in reality?

The universe could be infinite, both in terms of space and time, but there is currently no way to test whether it goes on forever or is just very big. … The part of the universe we are able to observe is finite, measuring about 46 billion light years in diameter.

## Does the universe repeat itself?

Unsourced material may be challenged and removed. Eternal return (also known as eternal recurrence) is a concept that the universe and all existence and energy has been recurring, and will continue to recur, in a self-similar form an infinite number of times across infinite time or space.

## Is Hubble still in space?

Hubble is the only telescope designed to be maintained in space by astronauts. … The telescope was still operating as of April 24, 2020, its 30th anniversary, and could last until 2030–2040.

## Is Pi an infinite?

Value of pi Pi is an irrational number, which means that it is a real number that cannot be expressed by a simple fraction. That’s because pi is what mathematicians call an “infinite decimal” — after the decimal point, the digits go on forever and ever.

## What is the mathematical definition of infinity?

Infinity, the concept of something that is unlimited, endless, without bound. … Mathematical infinities occur, for instance, as the number of points on a continuous line or as the size of the endless sequence of counting numbers: 1, 2, 3,….

## 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.

## What is on the other side of a black hole?

The event horizon is a proposed boundary around a black hole. On the other side of it, the gravitational pull of the black hole is so strong that, in order to escape it, an object would have to be moving faster than the speed of light, a feat that almost all physicists agree is impossible.

## 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.

## Will humans ever leave the Milky Way?

Four billion years from now, our galaxy, the Milky Way, will collide with our large spiraled neighbor, Andromeda. The galaxies as we know them will not survive. In fact, our solar system is going to outlive our galaxy. … But even at that speed, they won’t meet for another four billion years.

## Is Infinity impossible?

Aristotle postulated that an actual infinity was impossible, because if it were possible, then something would have attained infinite magnitude, and would be “bigger than the heavens.” However, he said, mathematics relating to infinity was not deprived of its applicability by this impossibility, because mathematicians …