Is it possible to rip space

Robert Brandenberger and Cumrun Vafa have shown that, when dealing with circular spatial dimensions, physicists must consider two different definitions of distance. Only one of these definitions conforms to our conventional understanding, because people generally only take into account one concept of distance. The idea that the universe is huge is one that quantum geometry calls into question.

According to light string modes, the universe is huge and expanding; according to heavy string modes, it is miniscule and contracting. This same seeming contradiction extends to the possibility of two different Calabi-Yau shapes giving rise to identical physics. Greene recounts how he and Ronen Plesser discovered mirror symmetry at almost exactly the same time that colleague Philip Candelas did.

Mirror manifolds are physically indistinguishable but are geometrically distinct. In , researchers discovered a black hole named CID that grew much more quickly than its host galaxy. Image credit: M. A stellar-mass black hole, with a mass of tens of times the mass of the Sun, can likely form in seconds, after the collapse of a massive star.

These relatively small black holes can also be made through the merger of two dense stellar remnants called neutron stars. A neutron star can also merge with a black hole to make a bigger black hole, or two black holes can collide. Mergers like these also make black holes quickly, and produce ripples in space-time called gravitational waves.

More mysterious are the giant black holes found at the centers of galaxies — the "supermassive" black holes, which can weigh millions or billions of times the mass of the Sun. It can take less than a billion years for one to reach a very large size, but it is unknown how long it takes them to form, generally. The research involves looking at the motions of stars in the centers of galaxies.

These motions imply a dark, massive body whose mass can be computed from the speeds of the stars. The matter that falls into a black hole adds to the mass of the black hole. Its gravity doesn't disappear from the universe. There is no way a black hole would eat an entire galaxy. The gravitational reach of supermassive black holes contained in the middle of galaxies is large, but not nearly large enough for eating the whole galaxy.

It certainly wouldn't be good! But what we know about the interior of black holes comes from Albert Einstein's General Theory of Relativity. For black holes, distant observers will only see regions outside the event horizon, but individual observers falling into the black hole would experience quite another "reality.

At the same time, the immense gravity of the black hole would compress you horizontally and stretch you vertically like a noodle, which is why scientists call this phenomenon no joke "spaghettification.

Fortunately, this has never happened to anyone — black holes are too far away to pull in any matter from our solar system. But scientists have observed black holes ripping stars apart , a process that releases a tremendous amount of energy. The Sun will never turn into a black hole because it is not massive enough to explode. Instead, the Sun will become a dense stellar remnant called a white dwarf.

In zero seconds, light travels zero meters. If time were stopped zero seconds would be passing, and thus the speed of light would be zero.

In order for you to stop time, you would have to be traveling infinitely fast. In the seventh dimension, you have access to the possible worlds that start with different initial conditions. The eighth dimension again gives us a plane of such possible universe histories, each of which begins with different initial conditions and branches out infinitely hence why they are called infinities. Secret dimensions In everyday life, we inhabit a space of three dimensions — a vast 'cupboard' with height, width and depth, well known for centuries.

Less obviously, we can consider time as an additional, fourth dimension, as Einstein famously revealed. Humans are three dimensional beings. Objects in 3D space have different lengths, different heights and different widths. Certain theories in physics suggest that our universe may have additional higher dimensions.

Humans, being three dimensional organisms, cannot sense or perceive these dimensions. Events in the past and in the future do not exist. The only reality, the only thing that is real, is the present. This idea is called Presentism. This idea, however, runs into some serious problems when you start taking into account relativity. The measurement of time began with the invention of sundials in ancient Egypt some time prior to B.

To clarify, space is the three-dimensional body in which all things in the universe move. Spacetime, however, is the combined concepts of space and time into a four-dimensional continuum. You may have even seen spacetime portrayed as a fabric , manipulated by energy.

Recently, evidence for this theory has moved beyond the strictly theoretical. Perhaps, one day, we will be able to manipulate spacetime in a similar manner. So while wormholes remain theoretically possible and important steps are being made, wormholes in spacetime, specifically, have yet to be observed or created.

Another potential method of time travel is time dilation. This happens because time moves slower for objects that are near strong gravitational fields such as Earth than for objects further from these fields, like the ISS. If you could get close to a black hole, because there are such strong gravitational forces in the vicinity, time would slow to a mesmerizing degree.