Astrophysics

No person has ever gone to a black hole. Black holes are extremely dense and have gravitational forces so strong that nothing, not even light, can escape them. It is physically impossible for a human to survive a journey to a black hole.

Inertia causes black holes to keep spinning even after matter falls into them, contributing to their strong gravitational pull. This property is known as frame-dragging, where the rotating black hole drags spacetime around it, influencing the movement of nearby objects and the flow of matter.

There are two ways of finding black holes. They can look for the effects that their gravity has on nearby objects and they can look for X-rays emitted by matter about to fall into them. A major challenge is that black holes themselves do not emit any light, making them impossible to detect directly.

A black hole is created when a massive star collapses under its own gravity at the end of its life cycle. This collapse causes the star to become extremely dense, with gravity so strong that not even light can escape its pull, creating what is known as a black hole.

Planetary velocity refers to the speed at which a planet moves along its orbit around the Sun or another celestial body. It is influenced by the planet's distance from the central body and governed by the laws of gravity and motion. The velocity of a planet is not constant throughout its orbit, as it changes based on its position and the gravitational forces acting upon it.

If a quark has a length of 1×10-18m, and if the volume of a quark could be calculated by using this length as it's diameter, then:

The volume of a quark would be 5.236x10-49m

And if the volume of the sun is about 1.409 x 1018km3 (or 1.409x1027m3), then the number of quarks that could fit in the sun would be:

1.409x1027m3 / 5.236x10-49m3 = 0.269x1076 or 2.69x1075 or 2.69 Quattuorvigintillion quarks.

It should be noted that this is an approximate number, based on the length of an up-quark or a down-quark. As well, the volume for the sun is also approximate.

The furthest star would be in the furthest galaxy. [See related question] That is about 12.9 billion light years from us - and probably accelerating away from us.

So light would take 12.9 billion years to reach us.

This is just the farthest galaxy we know of, considering the universe is bigger than what our cameras can pick up. Considering a common belief is that the universe is infinite.

No, it is not currently possible to control or manipulate the power of a black hole. Black holes are extremely massive objects with such strong gravitational forces that even light cannot escape from them, making them one of the most powerful forces in the universe.

A black hole absorbs everything it sucks in, including matter and light. Once something crosses the event horizon of a black hole, it is unable to escape and is thought to be crushed into a point of infinite density at the singularity.

== == * You would go into another dimension, and then cease to exist... either that or you would be in an infinite world of cheese that has borders. Or eventually spat back out as Hawking radiation.

* Most likely you would mushed tomato soup on the floor of your spaceship before you ever really got near the hole. After that you would be part of the spinning debris around the hole and most likely be a smear of atoms until you crashed into the event horizon. You would still be in our universe but the usual rules of physics would be gone and if those atoms made it to the singularity then who knows? You (atomically in pieces) might be spit out of the other end of the hole, you might be rushed out by a white hole, or remain in the center till the black hole overheated and converted what's left to ultrahigh powered radiation in a gigantic black hole explosion. * Mostly, black holes are an intense subject: the gravity curve is so immense that as you approach a black hole, your feet would be pulled in faster than your head, and it would essentially rip you up into the trillions of atoms that make up your body. You wouldn't really go anywhere, at least according to modern science... * If you went through a black hole, even if you did somehow go to another universe or galaxy, you'd suffocate inside it anyway. * Nope, I don't think you will suffocate because you will be ripped into tiny little pieces and ripped up into more tiny pieces, until you become into nothing but atoms.

The high-mass star enters a phase called "core helium burning" where energy production in the core increases due to the fusion of heavier elements such as helium into carbon and oxygen. The increase in energy production counterbalances the higher energy loss through radiation, maintaining a relatively constant luminosity. This equilibrium regulates the star's luminosity despite the increased energy output.

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quasar

VY canis majoris is the largest known star to man and one of the most luminous . This star is a red hyper-giant located in the constellation Canis major about 4900 light years far from the earth. this star is about 3 billion km in diameter and have 1800-2100 solar radii .

If we somehow replace our sun with this hyper giant, the surface of this star would extend beyond to the orbit of Saturn .

Cosmic tasks are tasks or challenges that are related to the universe, outer space, or celestial bodies. These tasks may involve exploring space, understanding cosmic phenomena, or conducting research related to the cosmos.

Black holes are a bit hard to detect, so I am pretty sure that not all black holes in this galaxy are known - and I suspect there is not even a decent estimate. But you can expect there to be several.

Technologies like X-ray telescopes, gamma-ray detectors, and radio telescopes have been instrumental in studying high-energy objects in outer space. These tools allow scientists to observe and analyze the emissions of these objects to gain insights into their properties and behavior. Additionally, advancements in computer simulations and data analysis techniques have also played a crucial role in interpreting and understanding the data collected from these observations.

Unlikely. The universe is a very big place, even next to the largest black holes we know. For a black hole to suck in the entire Universe, it would need to be nearly as massive as the universe itself. There is no way that such a black hole could form.

• the event horizon is an imaginary spherical or ellipsoidal shell at a certain altitude above the singularity of the black hole, the shape and altitude above the singularity of this imaginary shell depends on only three properties of the singularity: mass, spin, and charge. the event horizon shell is not solid and so things fall through it quite easily, but nothing inside it can go outside it including light
• a black hole has no surface, only a singularity of infinite density at its center

Scientists assume that the meteors, asteroids, and comets were created at the same time as the solar system. Those have rocks that contain radioactive materials. The radioactive materials became a part of those rocks when they were created. None were ever added. It is possible to find the rate at which radioactive materials decay into other elements. Scientists can take the radioactive material in a rock and measure it and compare the amount of its decay results to their tables in a book. That tells them the Solar System is something between 4 and 5 billion years old.

In Jan 1987, John Cormedy of Dominion Astrophysical Observatory in Canada discovers the balck hole in Galaxy Andromeda and estimated that the diameter of black hole in Andromeda Galaxy is 10 million times as massive as the Sun.

Yes. And when this occurs, they will collide and annihilate one another.

A black hole could potentially disrupt the orbits of objects in the Oort Cloud through its gravitational pull, but it is unlikely to "suck in" the entire cloud. The vast distance of the Oort Cloud from any known black holes reduces the probability of such an event occurring.

If you fall into a supermassive black hole, you would be stretched and torn apart by the extreme gravitational forces before reaching the black hole's singularity, where all your matter would be crushed into an infinitely small point. This process is known as "spaghettification."

A black hole will take you to instant death. The gravitational attraction will pull your body apart as soon as you enter the event horizon.

It has been speculated that a black hole could create a wormhole that could alter space time, but these are just hypothetical and not proven.