Black Holes

The distance between Neptune and a black hole can vary widely depending on the location of the black hole. Black holes are found throughout the universe, so there isn't a fixed distance between Neptune and all black holes. Neptune is currently about 2.7 billion miles from the closest known black hole, which is the stellar-mass black hole in the system HR 6819.

The fourth dimension is time. Since black holes have a strong gravitational pull, they are able to warp the fabric of space around them. As such, they also have an effect on time. As you approach a black hole, "frame dragging" occurs (which is the twisting of space and time), and the closer you get to the event horizon of the black hole this effect only intensifies. As such, the fourth dimension does become warped near a black hole.

Black holes are the closest thing known the have put a rip in time and space. We do not actually know what a black hole is made out of because we can not observe past the event horizon where light can not escape due to the black holes gravitational force.

You could say that a black hole when it is not "feeding" is made of pure force, it has been theorised that black holes are partly made up of radiation. But than again it is just a star that has imploded.

A hole with a diameter of about 1.5 inches would be suitable for a sparrow to enter a birdhouse or nesting box. Make sure the size of the hole is appropriate for the specific species of sparrow you are trying to attract.

The size of a cat's body, including its genitalia, does not vary based on its color. Physical characteristics such as size can vary among individual cats regardless of their color. It's important to consider the specific breed and genetics of the cat when discussing size.

In terms of astronomical objects, most black holes are quite small. The event horizons of stellar mass black holes, the most common type, would range from about 10 to 100 miles in diameter, which works out to a volume of 500 to 500,000 cubic miles. Compacting such a large mass into a comparatively tiny volume is precisely why black holes have such strong gravity.

The concept of black holes was first proposed by physicist John Michell in a 18th century paper, followed by additional work by Pierre-Simon Laplace. However, the term "black hole" was coined by physicist John Archibald Wheeler in 1967. The modern understanding and theory of black holes has been developed by many scientists, including Stephen Hawking and Kip Thorne.

The claim about a miniature black hole at Six Flags fun park is not based on reality. There is no such thing as a miniature black hole at any amusement park. It is likely a fictional or exaggerated claim.

No. If going by the size of the event horizon, a diameter of 450,000 km would correspond to a black hole 76,200 times the mass of the sun, which would be considered an intermediate mass black hole, between stellar mass and supermassive.

The supermassive black hole at the center of our galaxy, at about 4 million times the mass of the sun has an event horizon about 23.6 million (23,600,000) kilometers across.

Black holes up to 12 billion solar masses have been detected with event horizons up to 71 billion (71,000,000,000) kilometers across. More massive ones may exist.

In order to appreciate why a black hole forms, you need to be familiar with some basic concepts of mass and density. Mass is basically all the matter that makes up an individual object (protons, neutrons, other sub atomic particles etc). Density is the amount of space or volume that that matter takes up. for example, if you were to compare a pound of feathers to a pound of rocks, the pound of rocks will take up considerably less space as it is more dense. Now looking at a larger scale, we have a star. Stars are very dense, very large, and very heavy. As stars age they go through all of their hydrogen, and start to consume heavier elements such as helium, producing denser elements still in the process. Eventually all these heavy particles cause the stars to collapse in on itself, and if it large enough, produce a supernova, and if it is large enough still, to create a black hole. The creation of the black hole is a result of all that suns matter, being compressed into a tiny fraction of its previous size. Imagine instantly compressing an entire sky scraper into the size of a pin head, and that is close to the kind of density required to make a black hole. If you've ever noticed that a heavy, tiny object will rip through a garbage bag, the same concept holds true on the galactic level. In this case however, the garbage bag is the fabric of the universe itself. The star's collapse condensed so much matter into so small a space that it literally ripped a hole in the universe. (although the matter never leaves the universe, it is condensed into an impossibly small area called a singularity)

Stephen Hawking's work on black holes has advanced our understanding of fundamental physics, leading to discoveries about the behavior of black holes and the nature of the universe. This knowledge has contributed to technological advancements and new insights into the fundamental laws of physics, which could have practical applications in the future. Additionally, Hawking's work inspires curiosity and innovation in scientific research and education worldwide.

The event horizon of a black hole marks the boundary beyond which nothing, not even light, can escape the gravitational pull. This affects space by creating a region where the curvature of spacetime is so strong that it distorts both space and time, leading to extreme gravitational effects.

A white dwarf is the last stage of a low mass stars life. After a red giant is done fusing helium to carbon and oxygen, the star will collapse to a white swarf. White dwarves are usually between 15,000-6,000 kelvins.
A white dwarf is formed when a small or medium-sized star runs out of fuel in its core. The star becomes a red giant and later blow off the shell into the interstellar space. The remaining core becomes a white dwarf.

The answer to that question is twofold:

1. A black hole of sufficient size itself is not very bright at all. Initially, it was thought that all radiation was absorbed into a black hole, rendering it effectively invisible. Stephen Hawking, however, calculated that a black hole may radiate at an insignificantly low temperature, a phenomenon now known as Hawking radiation.

2. Around a black hole of sufficient size, accretion disks of matter may form. The matter falls in towards the black hole, and before it enters the hole's event horizon is crushed and heated to extreme temperatures. The radiation this produces may be observed in various spectra and may be very bright indeed.

We really can't "see" a black hole. What we "look" for is a high

concentration of x-ray emissions. Some of these places (possibly

black holes) are a cluster called M15 approx. 35,000 light years away.

The most popular one is Cygnus X-1 which is an eclipsing binary star

system approx. 10,000 light years away - the closest I know of.

The "why" of discovery might be more in the philosophical than the scientific realm; it's safe to assume in general terms that curiosity is a big motivating force behind discovery. In one sense, the reason behind black holes' discovery may have been somewhat indirect or even unintended; they appeared in solutions to Einstein's field equations from General Relativity, which is basically the theory of gravity that has proved to be most consistent with observation. Subsequently, other scientists stepped forward with mathematical solutions that described a consistent theoretical framework for their existence; thereafter, the hunt for observational evidence began. Study of radiation from Cygnus X-1 is generally believed to place it as the first black hole identified.

Note that quasars, now generally accepted as being powered by supermassive black holes, were discovered about a dozen years earlier, but their significance in relation to black holes not really understood and accepted until almost a decade after the compelling evidence from Cygnus.

The formula for the Schwarzchild radius of a black hole is given by

Rs = (M/Mo) x 3km.

Here Mo means the mass of the Sun.

For Earth, M/Mo = 0.000 003, that is, Earth has 0.000 003 x Mo.

Thus Earth's Schwarzchild radius is about 1 cm.

That means that if a giant squeezed Earth into a diameter less than 2cm,

it would be a black hole.

The event horizon of a black hole is estimated to be about 300 kilometers for a black hole with a mass of 100 times that of the sun. This is the point of no return where the gravitational pull is strong enough to prevent even light from escaping.

As the mass of the black hole grows greater and greater (from sucking in everything around it) it has an ever increasing gravitational force that pulls its outer-lying matter inward more and more and thus increases its density by decreasing its volume

The average travel distance from a black hole on Earth would depend on the distance to the nearest known black hole, which is typically thousands to millions of light years away. Traveling to a black hole would require advanced technology and is not currently feasible with our current understanding of physics.

In the scenario of the Big Rip, where dark energy causes the universe to expand at an increasing rate, black holes would eventually be torn apart as the fabric of space itself is stretched to its breaking point. This would result in the dissolution of the black holes into elementary particles.

Yes, there have been reports of individuals getting caught in strong whirlpools while swimming or boating. These whirlpools can be powerful and dangerous, pulling objects or people down underwater due to the rapid circular motion of the water. It is important to exercise caution around whirlpools and be aware of their presence in certain bodies of water.

The short answer is: Yes.

The more complete and maybe slightly ruder answer is: Even if there were only two objects in the universe, let's say a basketball and a CD, and even if they were on opposite sides of the universe, eventually, the two objects would collide. Now let's say that there's a teaspoon of black matter on one end of the universe and an electron on the other end. With something as infinitely dense as a black hole, the electron wouldn't have a chance. Things always gravitate towards each other, no matter the distance, the only variable with a possibility of change is time it takes.

During the gap in my resume, I took some time to focus on personal development, pursue further education or training, engage in volunteer work, or handle family responsibilities. I also used the time to explore new interests and skills that would enhance my career prospects upon my return to the workforce.