Boltzmann brain – how are the laws of physics presented?

What are the 3 possible futures for the universe?

Role of the shape of the universe

  • Closed universe. If. , the geometry of space is closed like the surface of a sphere. …
  • Open universe. If. , the geometry of space is open, i.e., negatively curved like the surface of a saddle. …
  • Flat universe. If the average density of the universe exactly equals the critical density so that.

What are the 2 possible futures for our universe?

There are two possible futures for our Universe, continual expansion (open and flat), or turn-around and collapse (closed). Note that flat is the specific case of expansion to ever slowly speeds aproaching zero velocity.

Will the universe continue?

The universe won’t ever stop expanding, but will spread out over trillions of years, stretching all matter and energy to such an extreme that our one universe will be separated into multiple universes.

How many years from now will the universe end?

Many theoretical physicists believe the Universe will end, and it could happen at any point between 2.8 billion years and 22 billion years from now.

Can the universe end?

Scientists now consider it unlikely the universe has an end — a region where the galaxies stop or where there would be a barrier of some kind marking the end of space.

Are there other universes?

There is not one universe—there is a multiverse. In Scientific American articles and books such as Brian Greene’s The Hidden Reality, leading scientists have spoken of a super-Copernican revolution.

What will happen in 100 trillion years from now?

And so, in about 100 trillion years from now, every star in the Universe, large and small, will be a black dwarf. An inert chunk of matter with the mass of a star, but at the background temperature of the Universe. So now we have a Universe with no stars, only cold black dwarfs.

What will happen in 100 billion years?

100 billion years would shift the cosmic microwave background far into radio wavelengths, and dilute the density of photons so severely that it would take a radio telescope the size of Earth in order to observe it!

Whats at the end of space?

Scientists now consider it unlikely the universe has an end – a region where the galaxies stop or where there would be a barrier of some kind marking the end of space. But nobody knows for sure.

Is time Travelling possible?

Yes, time travel is indeed a real thing. But it’s not quite what you’ve probably seen in the movies. Under certain conditions, it is possible to experience time passing at a different rate than 1 second per second. And there are important reasons why we need to understand this real-world form of time travel.

How cold is space?

The Cosmic Background Explorer (COBE) satellite has refined temperature measurements taken way back in 1964. According to data from the Cosmic Background Explorer (COBE) satellite, the temperature of space is 2.725K (2.725 degrees above absolute zero).

What’s inside a black hole?

What is at the center of a black hole? At the center of a black hole, it is often postulated there is something called a gravitational singularity, or singularity. This is where gravity and density are infinite and space-time extends into infinity.

Is there a white hole?

White holes cannot exist, since they violate the second law of thermodynamics. General Relativity is time symmetric. It does not know about the second law of thermodynamics, and it does not know about which way cause and effect go.

Do we live in black holes?

It can only be crossed from the inside to the outside space flows at the speed of light across the event horizon from within. That's starting to look like our universe a past space like singularity.

Do wormholes exist?

Wormholes are shortcuts in spacetime, popular with science fiction authors and movie directors. They’ve never been seen, but according to Einstein’s general theory of relativity, they might exist.

Can time be bent?

So to answer your question, time does not literally “bend”. A massive object modifies the proper time interval around it such that an outside observer would see objects near the mass experience less time and spacetime intervals would have their spatial components modified accordingly.

Can Earth become a black hole?

Despite their abundance, there is no reason to panic: black holes will not devour Earth nor the Universe. It is incredibly unlikely that Earth would ever fall into a black hole. This is because, at a distance, their gravitational pull is no more compelling than a star of the same mass.

What is white black hole?

White holes are theoretical cosmic regions that function in the opposite way to black holes. Just as nothing can escape a black hole, nothing can enter a white hole. White holes were long thought to be a figment of general relativity born from the same equations as their collapsed star brethren, black holes.

How many universes are there?

In a new study, Stanford physicists Andrei Linde and Vitaly Vanchurin have calculated the number of all possible universes, coming up with an answer of 10^10^16.

Do we live in white holes?

There are no known physical circumstances that can lead to the existence of white holes. They are purely hypothetical (due to the math). Though Smolin says that they actually exist on the other side of black holes.