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Astrophysics

Astrophysics is the scientific discipline concerned with the events that are taking place on the grandest of stages; the universe. Questions about the formation and evolution of the planets, solar systems, stars, and galaxies found within the universe, as well as questions regarding black holes, cosmic rays, particle and nuclear astrophysics, nucleosynthesis, and magnetohydrodynamics should be directed here.

1,304 Questions

I am given the bolometric BC equals -1.46 and the visual magnitude V equals 4.33 of a star. how do you calculate the angular diameter?

The bolometric correction allows you to convert between visual and bolometric (total) magnitude - where the bolometric magnitude includes all radiation emitted by the star, not just visible light. It has nothing to do with the angular diameter.

Has anybody ever been sucked into a black hole?

No one is known to have gone through a black hole, (at least, not the 'black hole' of interest to astrophysics). Humankind has not yet developed a practical means of space travel across the vast distances to even the nearest known black hole.

Can you make relationship in pragnancy time?

It is not recommended to start a new romantic relationship during pregnancy as it can add stress to an already challenging time. It's important to focus on supporting the health and well-being of both the mother and baby during this period. It may be more beneficial to seek support from friends, family, or a healthcare provider.

How black hole absorb light?

Light is affected by gravity, if the gravity is immense. In a black hole, the gravity is so immense that light cannot escape from it, hence it cannot be seen - whcih is why it's called a "black hole".

How do cosmic storms happen?

Cosmic storms, such as solar flares and coronal mass ejections, occur when the Sun's magnetic field lines become twisted and release large amounts of energy into space. These storms can send streams of charged particles and radiation towards Earth, potentially disrupting communication systems and causing auroras.

What is more dangerous a black hole or a dark hole?

A black hole is more dangerous than a dark hole. Black holes are regions in space with gravitational forces so strong that not even light can escape, while a dark hole does not have a specific scientific definition and may refer to areas of space with lower light or energy levels.

Definition of a black hole?

A Black Hole is usually formed when a dying Star collapses into a heavily massive object that pulls more objects into its gravitational field. It becomes so massive that the gravity is so powerful that even light can not escape. That is why it is "invisible" to astronomers look at it.

Who stood up for the blacks?

Many civil rights leaders and activists, such as Martin Luther King Jr., Rosa Parks, Malcolm X, and Harriet Tubman, stood up for the rights of African Americans during the civil rights movement in the United States. They fought against segregation, discrimination, and injustice to advocate for equality and civil rights for all.

How can a black hole hold a galaxy together?

The center of the (Milky Way) galaxy is a black hole. Think about a heterogeneous mixture of materials of different densities placed under the influence of gravity. Heavier materials tends to stay inner. Expect the same here. The heavier black hole is ought to stay at the center of the galaxy. Answer Scientist think that its a super black hole (I forgot what its really called), think of it as a egg, the yolk is the center and the white is the actual galaxy part. If you didn't know, the Andromeda galaxy has two 'yolks': there appear to be two main concentrations of mass near the center; some astronomers think this may be a sign that the Andromeda galaxy is the result of the collision of two smaller galaxies. A massive black hole is believed to be in the center of the Milky Way, and is now believed to be at the center of most, if not all, galaxies.
Current cosmology holds that a supermassive black hole
typically resides at the center of a galaxy.

How do you die from a black hole?

From the unimaginable force of gravity. As you fell into a black hole, first you would be torn in half, then that half would be torn in half, then that half would be torn in half, so on and so on all the way down to every atom in your body.

What is super hyperspace?

Super hyperspace is a theoretical concept in science fiction that describes a form of travel that allows for faster-than-light travel by transcending normal three-dimensional space. It is often portrayed as a way to cover vast distances in a short amount of time by jumping through higher dimensions.

Could the universe membrane theory and multiverse suggest that when two universes collide They create a new universe?

Yes. One possible source for the big bang that scientists have been discussing is that the big bang occurred when two membranes intersected. It is possible that our universe is the intersection of two five dimensional membranes.

What is a space rift?

A space rift is a hypothetical concept in science fiction that refers to a tear, crack, or distortion in the fabric of spacetime, allowing travel between different regions of space or even to other dimensions. It is often used as a plot device in stories to facilitate interstellar travel or communication.

How fast would you have to go to open up a rift in space?

Currently, there is no scientific evidence or theory to suggest that it is possible to open up a rift in space by moving at a certain speed. The concept of opening a rift in space is more commonly found in science fiction rather than in real scientific understanding.

What is cosmic power?

Cosmic power typically refers to the vast and mysterious forces that govern the universe, such as gravity, electromagnetism, and nuclear forces. In a broader sense, it can also refer to the idea of a transcendent energy or consciousness that underlies all of existence. It is often used metaphorically to describe an immense and inexplicable source of energy or influence.

What is the ruling planet for Pisces?

The ruling planet for Pisces is Neptune. Neptune influences the dreamy, intuitive, and empathetic nature of Pisces individuals.

Does anyone think that there is a technology capable of capturing and redirecting ultra-high-energy cosmic ray uhecr or extreme-energy cosmic ray eecr for use on earth?

Cosmic rays are of such high energy that as soon as they encounter the atmosphere they begin "breaking up" subatomic particles in the atoms making up the gas of the atmosphere, producing secondary showers. Any technology like that you are suggesting would have to operate well outside the atmosphere (probably at altitudes above 5000 miles) and have "collectors" thousands of square miles in area and very thick.

We currently have no ability to build anything of those dimensions and mass anywhere in space and it is unlikely we ever will, unless we finish the canceled 1950s to 1963 Project Orion that planned to use high yield hydrogen bombs to launch things into space. A Project Orion vehicle could place any object of any mass in orbit by exploding 60devices (the larger the mass the higher yield required for each device but no more devices are needed) in rapid succession starting on the earth's surface, for an orbit as high or higher than 5000 miles more than 60 devices would be needed but not all that many more.

I doubt anyone now would approve a project involving detonating dozens of nuclear explosives in the megaton range seconds apart in the atmosphere to perform such launches.

Beyond getting the equipment in space where it would need to be to work, I don't think anyone has any idea what actual equipment might be needed for this purpose.

Will our sun become a red giant then will it become a supernova then a black hole?

No, our sun is not destined to become a supernova and/or a black hole. It will become a red giant, but it is not massive enough to cross the threshold and become a candidate for a fate like either of those last two.

Are there any black holes near Saturn?

There are no known black holes near Saturn. The nearest known black holes are much further away in our galaxy. Saturn does have its own moons and rings, but black holes are not typically found in such close proximity to planets.

Is there such a thing as a spinning blue meteor or comet or shooting star?

Shooting stars are meteorites, and they exist. I've never heard about a "spinning blue meteor" (or a "spinning blue comet" or a "spinning blue shooting star", if you are asking about this as well) and cannot find any information about it either.

What happens when anti gravity and a black hole are put together?

If an anti-gravity field were to somehow counteract the gravitational pull of a black hole, it could potentially prevent objects from falling into the black hole. However, the intense gravitational forces of the black hole would likely overpower any anti-gravity effects, making it unlikely for anti-gravity to have a significant impact on a black hole.

What is the only way to see a black hole?

Black Holes by nature cannot be "seen" because of their gravitational ability to pull in light. Obviously you "see" something when light hits an object and then enters your eye. Black holes can be detected with a combination of electronics and deductive reasoning. Black holes emit x-rays which can be detected. It is when x-rays are detected from space yet no possible visible source is found that a black hole exists.

What is being expelled from black holes?

While nothing can escape from within the event horizon of a black hole, matter that has not yet passed that point of no return still has a chance. When a large amount of matter falls into a black hole, there is not enough room for all of it to reach the event horizon. What doesn't fall into the event horizon gets ejected in two jets of subatomic particles traveling at almost the speed of light.

When was seti created?

The Search for Extraterrestrial Intelligence (SETI) was officially established in April 1985 as a collaborative effort among scientists, astronomers, and researchers to search for signals or signs of intelligent life beyond Earth.

Is a black hole racist?

No, a black hole is not racist. It is a region in space where gravity is so strong that nothing, not even light, can escape from it. The term "black hole" refers to its ability to absorb all forms of energy and matter within its event horizon.