Astrophysics

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.

Nobody went to any black hole, I can tell you that. If anyone were to go into one, they would be spaghettifyed! Also, if anyone made it into a black hole and went down all the way and came back out to live to tell the story, they'd go down in history.

The universe is not destroyed, but rather it is constantly evolving and changing. The destruction of the universe is a theoretical concept that is often discussed in the context of scientific theories such as the Big Crunch or the Heat Death of the universe, but these scenarios are not guaranteed to happen.

There isn't an exact opposite of a black hole in terms of cosmic phenomena. Some theories suggest the existence of "white holes," which are hypothetical regions of spacetime where matter and energy are ejected instead of being pulled in, mirroring the behavior of black holes. However, white holes are purely theoretical and have not been observed or confirmed.

Both black hole and Big Bang singularities are points of infinite density and mass where known physical laws break down. They are both areas where gravity is extremely strong, leading to intense curvature of spacetime. Additionally, our current understanding of physics is unable to fully describe or predict the behavior of matter and energy within these singularities.

The gravity in a black hole is so strong that even light can't get out of it.

Nothing, with the exception of Hawking Radiation, can escape from a black hole. Effectively the gravitational force is infinitely strong.

Black holes are stronger than a thousand planets. Every planet they swallow, makes their power grow.

Cygnus X-1; Sagittarius A*

Actually, any observed black hole can be assumed to have been a star at some moment; although in the case of the supermassive black holes, it is not quite clear how they formed.

Most micro black holes are predicted to evaporate through Hawking radiation, a process where they lose mass over time. The smaller the black hole, the faster it will evaporate. However, there are still uncertainties surrounding the exact mechanisms of black hole evaporation.

Black holes are also studied in physics, specifically in the field of general relativity. The study of black holes involves understanding their formation, behavior, and effects on surrounding matter and spacetime. Additionally, black holes are also of interest in the field of mathematical physics for their complex geometrical properties.

There is no "deep core" of a black hole. Think of it as a one way tunnel. Matter is disassembled, sent through the "tunnel", exits the tunnel through a white hole (the other end of a black hole) Think of it as the part of a lawnmower which shoots out grass only when the grass comes out it is just a random assortment of particles. As to where the particles are sent... some scientists theorize that it is an alternate universe but no one knows for sure...

Cosmic rays can provide valuable information on the structure and composition of volcanic rocks by measuring the interactions of cosmic rays with rock material. By studying the secondary particles produced when cosmic rays interact with volcanic rocks, scientists can learn about the density, thickness, and mineral composition of the rocks. This information can help in understanding the internal processes of volcanoes and their eruption dynamics.

Neutrons stars are smallest stars in the Universe, with diameters of just 10-30 km! They are very compact and denese bodies, formed during a supernova explosion. When the tiny particles of the exploded star-atoms merge together, a neutron star is born. During this process of merging, electrons in the atoms are squeezed with protons, whch results in the formation of neutrons. This merging occurs because of the intense gravitational collapse. Once the star is formed, it is regular as any other star, barring its size and weight. It is so dense that is a sugar cube sized portion of the star would weigh as much as the people on Earth. It has a very powerful magmetic feild, and spins about 100 times a second.

If you were standing in the path of totality during a solar eclipse, you would witness the moon completely blocking the sun, day turning to twilight, stars becoming visible, and the sun's corona glowing in a halo around the moon. It's a unique and awe-inspiring experience that can only be witnessed during a total solar eclipse.

If two black holes started pulling on each other simultaneously, they would accelerate towards each other due to the force of gravity. As they move closer, they would reach a point where they start orbiting around each other in a process called binary black hole formation. Eventually, they would merge into a single more massive black hole, releasing energy in the form of gravitational waves.

The collapse of a massive star in a supernova explosion can signal the formation of a new black hole.During this event, the core of the star collapses under its own gravity, forming a singularity and creating a new black hole.

First answer person:
Nope. It's a planet and planets don't have black holes in the center of them: a black hole at it's center would eat the planet quickly and move on to the next and the next and the ....

Second answer person (much handsomer):
hmmm....well has anyone actually seen the center of a planet to show there's no black hole?

Physicist Nassim Haramein, on the cutting edge of "fractal cosmology", mentioned in a lecture once that *everything* has a black hole at its centre (atoms, people, planets, etc).

I'm not a physics whiz so I'll lose an argument if you try and debate me; however I would suggest searching for his name and checking out what he's got to say. (I heard his theory on an 8-hour Google Video epic).

-Dan

PS Check this out (part 2 of the video): http://video.google.com/videoplay?docid=6151699791256390335#docid=-1895475242307393956 ... right at the beginning he talks about a black hole at the center of the sun.

Scientists cannot view a black hole directly, but they can see the effects of the black hole in the surrounding space. For example, matter being sucked into a black hole emits radiation which can be detected, or a its gravitational effects on neighboring stars and dust.

no dude, the evidences of the existence of black holes is now widely accepted and i believe that black holes rules our universe but it is difficult to find them because black holes are nearly the perfectly black bodies

Yes, it's possible to reinforce holes. Given that the general notion of a hole is the absence of a particular material in which the hole is made, the process of reinforcing the hole would involve reinforcing the material around the hole. One example would be a ring reinforcement used to prevent paper tear around a punched hole in a sheet; another would be an eyelet in textiles.