Is it possible to create your own universe?
But according to Columbia University physics professor Brian Greene, it is theoretically not impossible (which is his way of saying the possibilities are not zero) that one day, a person could build a universe. The very idea is so startling it’s hard to know what this means.
How can the universe be eternal?
While the universe is evolving, there is no beginning and no end – the universe exists forever. The early state of inflation is described in two different, but equivalent pictures. In the freeze frame the universe emerges from an almost static state with flat geometry.
Can anything eternal?
Eternal: lasting or existing forever; without end or beginning. Then the answer is no. You can not bring something eternal into existence because that presupposes that it did not exist before it was created. By definition anything that once did not exist and now does exist is not eternal.
Can the universe expand forever?
There is a strong consensus among cosmologists that the shape of the universe is considered “flat” (parallel lines stay parallel) and will continue to expand forever.
Can we create a black hole?
Scientists have therefore started creating artificial black holes inside labs to study their properties. And one such experiment, carried out by scientists at the Technion- Israel Institute of Technology, has proved that Stephen Hawking had been right about black holes all along.
Can there be a multiverse?
Even though certain features of the universe seem to require the existence of a multiverse, nothing has been directly observed that suggests it actually exists.
Can a wormhole exist?
Einstein’s theory of general relativity mathematically predicts the existence of wormholes, but none have been discovered to date. A negative mass wormhole might be spotted by the way its gravity affects light that passes by.
What is the white hole?
A white hole is a bizarre cosmic object which is intensely bright, and from which matter gushes rather than disappears. In other words, it’s the exact opposite of a black hole. But unlike black holes, there’s no consensus about whether white holes exist, or how they’d be formed.
Where does a black hole take you?
By their calculations, quantum mechanics could feasibly turn the event horizon into a giant wall of fire and anything coming into contact would burn in an instant. In that sense, black holes lead nowhere because nothing could ever get inside. This, however, violates Einstein’s general theory of relativity.
Does time stop in a black hole?
Time does stop at the event horizon of a black hole, but only as seen by someone outside the black hole. This is because any physical signal will get infinitely redshifted at the event horizon, thus never reaching the outside observer. Someone falling into a black hole, however, would not see time stop.
What is inside a white 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.
What is inside black hole?
The singularity at the center of a black hole is the ultimate no man’s land: a place where matter is compressed down to an infinitely tiny point, and all conceptions of time and space completely break down. And it doesn’t really exist.
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.
Can you destroy a black hole?
Another black hole won't destroy it the two will simply merge into a larger black hole releasing a bit of energy as gravitational waves in the process.
Are white holes real?
The short answer, unfortunately, is no. White holes are really just something scientists have imagined — they could exist, but we’ve never seen one, or even seen clues that one may exist. For now, they are an idea. To put it simply, you can imagine a white hole as being a black hole in reverse.
Are black holes hot or cold?
Black holes are freezing cold on the inside, but incredibly hot just outside. The internal temperature of a black hole with the mass of our Sun is around one-millionth of a degree above absolute zero.
What does a black hole do?
These infinitely dense points in space will spaghettify anything that ventures too close. Black holes are points in space that are so dense they create deep gravity sinks. Beyond a certain region, not even light can escape the powerful tug of a black hole’s gravity.
Can black holes be portals?
According to a study published in Monthly Notices of the Royal Astronomical Society, a team of researchers seeking to prove the existence of wormholes say they may have found evidence that some known black holes in the universe are entrances to portals that could allow travelers to venture through space-time.
How many dimensions do we know of?
The world as we know it has three dimensions of space—length, width and depth—and one dimension of time. But there’s the mind-bending possibility that many more dimensions exist out there. According to string theory, one of the leading physics model of the last half century, the universe operates with 10 dimensions.
What is the nearest black hole to Earth?
|6000±375||1.86 ± 0.12||Cygnus X-1 (Cyg X-1)|