Why does the Sun have radiation?

Sun is a huge ball of mass of hydrogen. So huge that the weight of the outer layers is crushing the mass at the center. The pressure experienced by the matter at the center causes some hydrogen atoms to fuse, forming the next heavier element Helium. So outer layers is converting hydrogen into helium

Will humans ever be able to find out what is on the other side of a black hole/singularity?

There isn't another side of a black hole. A black hole is a place where gravity is so strong that all matter is compressed to the smallest size possible - probably something called the ‘Planck Length'. That's it! In real black holes there aren't other sides, or gateways - only an unimaginably

What is the proof that mass is having an effect on space (and not space having an effect on mass)?

If we accept the general relativity view, spacetime does have an effect on the motion of the mass (or energy).  Mass tells spacetime how to curve.  The curvature of spacetime tells mass how to move.  There is no "limit" to the extent of either

Can the singularity of one black hole be more dense than the singularity of another black hole?

There are no such singularities.Edward Cherlin's answer to Can a black hole really have zero volume?The cores of black holes are all about the same size as the wavelengths of common particles, but of quite varied masses, and thus

What would happen if a neutron star collides with earth?

Before answering this question I will share few interesting facts about Neutron star. Neutron stars are smallest and the most densest star in our Universe. Its density is so high that even a 11 km diameter Neutron stars is 2 times heavier than Sum. Now lets

Why don't we send nuclear waste into the Sun apart from risks at launch?

Because there is no valid reason to do so. There are very good reasons to leave highly radioactive materials alone. We may need them sometime in the future. They are not harming anyone where they sit. The radioactivity naturally declines

What would be the speed of light in a black hole?

Speed of light remains same in a black hole as it is anywhere else. Speed of light cannot be changed by any means, wherever you look, whenever you look. You can't see light coming from a black hole because the gravitational field of the black hole is so strong, up to its

In which direction of the sky is the universe's expansion pointing, seen from our vantage point?

No matter where an observer is in the observable universe, the expansion is the same in all directions. I'm not saying that we on Earth are in a special position from which the expansion is everywhere away from us. The

What are your thoughts on the NBC article stating the Oumuamua object may have been an alien probe?

I think that they are full of unfounded crap which they have to say because unless it's about aliens, bigfoot, nessie or some other happy crap they figure the average, ignorant doof on the street cannot possibly be interested.They are talking

What happens to the tail of a comet when it moves far away from the Sun?

The tail of the comet is gas and dust boiled off by the heat if the sun. So no new tail material is emitted once it gets away from the sun. The material emitted near the sun goes into its own orbit, similar to

Do you believe in the possibility of extraterrestrial life?

Do you believe in aliens and why?I belive intelligent life exist elswere in the universe but i dont belive they are visiting the earthThere are millions of galaxies out there. with millions of solar systems each. to belive that there is no other planet among the untold billions of planets that exist that

How would you put out the sun?

First you need to understand what the sun is: a giant nuclear fusion reactor. The energy to start the reactions comes from the pressure given by the sun's own gravity. So if you want to put out the sun, there are a couple of things you could do.One, you would need

What will happen if the universe stopped moving?

Because the universe has momentum from a collapsing path in the seventh dimension, when the seventh dimension disconnects from this universe, it would be as though everything stopped moving and things going on would

What would happen if a black hole traveled faster than the speed of light?

The speed of light is the limit and the very first thing Wrong With Contemporary Black Holes. Quantum Relativity argues a case for quantum black holes that strongly interact. You still have a singularity defined by the Schwarzschild, but the Reimannian

What would happen if a neutron star was a cube?

There is no way it could be shaped into a cube. None at all. Neutrons can't be manipulated at the macroscopic scale by anything but gravity. And using gravity strong enough to reshape the neutron star would just tear it apart, sucking it into the black holes you were using.

Which star appears in the sky as the star which all other stars revolve around?

Jules Stoop is correct on both counts, however, on the second count, he has not mentioned the second one.Which star appears in the sky as the star which all other stars revolve around?There are two stars around which it appears the other stars are revolving around, Circumpolar star. In the northern

What will happen if a neutron star burst?

Neutron stars can and often do accumulate more mass over time, picking up gas, dust, and bits of rock and ice (or even larger bits - asteroids and comets). If there is aother star very close by, as sometimes happens with binary stars, the neutron star can slowly

How much time do all planets take to complete one revolution round the sun?

If you want to know the values you can google them. The values you will get will be according to earth's time. 24 hours is a repetitive phenomena on earth. Suppose we are living on mars the we would say that earth complete its revulotion faster then mars. Main

How could anything burn this long like the sun?

well it is a giant nuclear reaction, creates a huge gravitational field which holds the nuclear reaction together at a point, it like fuel in a bottle the bottle(gravity) stops it from losing mass too fast, the fuel works till it depleted. but to put it in simple terms the sun is really really

Is there more than one dark energy?

There may not even be one Dark Energy. It cannot be seen or measured, but it has been postulated to solve a problem, like the old time ‘Caloric' fluid.

What would happen to the earth if suddenly one of the giant planets disappeared?

We wouldn't notice any change initially, but I seem to recall hearing that the placements of the planets are not random - their orbits are in some sense resonant with each other in ways that are now stable; removing one

How is the Universe 13.4 billions years old and at the same time its approximate diameter is more than 90 billion light years?

The 90 billion lightyears number is actually 93 billion lightyears and that is the size of the observable universe and not the size of the whole universe. The observable universe is only part of the whole universe which is most likely infinitely large.Still, the question remains, how can the observable universe be so large if it only got

Can we ever see the universe beyond 13.8 billion light years from our position?

If you look at something from two positions it appears to shift by some angle depending an how far away it is and the length of your baseline. If you look from opposite sides of the Earth's orbit, that is the longest baseline we

If the universe expands from a single point from the Big Bang, why is there still not a center?

Theoretically there is no center because space is expanding from an original point, but continues to expand.In observation however, there is a center of the universe and Earth is near it.Red shift has fallen out of favor for measuring distance or age. Near-space quasars tell us they are not in deep space and their red-shift is intrinsic.Feynman - "...I

Is it possible that the probability of life spontaneously appearing is so low that Earth is the only planet in the Galaxy (or in the observable universe) in which it has happened?

Is it possible that the probability of life spontaneously appearing is so low that Earth is the only planet in the Galaxy (or in the observable universe) in which it has happened?I am not a statistician, or a mathematician. All I can do is read. However, it seems, from what I do read, that the odds of

Do black holes move?

Singularities are not "stuck" anywhere. They move like any other celestial body through space.Yes, black holes move. In fact, there is one known as GRO J1655-40, is streaking across space at a rate of 400,000 kilometers per hour. That speed is four times faster than

What will earth be like in one billion years?

Bear with me here while I share my perspective...Man has a propensity for scientific advancement, engineering, war and revenge like no other life on this planet...we continue to develop weapons of incredible (and increasing) power with each advancement in understanding. With each advancment we

What makes it possible for the planets to continue to orbit the sun without falling off their orbits?

The lack of anything stopping them from continuing to orbit the Sun.Newton's First Law

Will Earth fall into the sun?

-The better way is to say that earth will be swallowed by sun.-As per the theory of relativity, the earth will follow a spiral path ending in the sun because of the bent in space fabric caused by sun. But this will be a very slow process-many years before that

How can negetive energy be used to warp spacetime? How it can be used for warp drive propulsion (for traveling faster then speed of light) ?

Okay, so energy, right? Equivalent to mass times the speed of light squared. Point is that mass and energy are equivalent. That's positive energy. Positive energy behaves like positive mass, forming a gravity well whose strength is equivalent to the

What would happen if a neutron star approached the sun? What would happen to the sun?

IANAA (I am Not an Astronomer) but here is my layman's understanding of the consequences.The initial state of the situation would be that the neutron star would be passing through the solar system on a hyperbolic trajectory. In other words, it isn't in a closed orbit, and it's

How long do black holes take to create?

There may have been some primordial black holes formed in the early Universe. The supernova events that end up as black holes, are a few days long.LIGO Detects a Neutron Star Merger ... probably did not end up quite making a black hole, but could have had the masses been higher, in just

How would the earth be affected if the sun suddenly disappeared?

If sun disappeared the consequences would be pretty dire. But our planet retains heat rather well, so we wouldn't freeze to death instantly.Those on the night side wouldn't feel much difference initially but eventually the lack of the

Why don't planets emit their own light and why stars do?

Planets don't have their own light. So they do not emit light. This phenomena goes back to their formation. When they are formed, they are much much less hotter than stars. In stars, fusion reaction always goes on, and thus energy, as well as light

What would happen if all the sugar in my jar was replaced with neutron star matter?

Okay, so about a 100 billion kilogrammes of neutron star material replaces the sugar in the jar you have.Now what will happen. To understand this we must first assume that the super dense material won't expand on reaching earth. The neutron

What is more important, dark energy or dark matter?

The excerpt below from the manuscript

Are all stars as far away from each other as the closest one is to our sun? (The closest star to us is about 4.2 light years away, do all stars share that proximity to each other?)

No.All stars are different in size, age, speed, rotation and problably lots of others things. Under these conditions it is impossible to uphold a stable, even distribution of stars at a fixed distance.By the way, the closest star is our own Sun, 8 minuts and 20 seconds away (= 1 Astronomical Unit)

If we are looking at light from something 13 billion light years away, how near to us was it when the light set out?

If we are looking at light that is coming from 13 billion light years away, then the source of that light has since moved out to about 46 billion light years away.The light from a source that is currently 13 billion light-years out, will come from a place much closer to us... you have to use

How will the sun be a red giant?

After about 5 billion years most of the hydrogen will finish.The mass will be reduced.But helium fusion will continue.After a

Why can't you see the Sun or stars in all of the outer space pictures they show us?

Because of the immense distances involved, one exposure won't capture detail for all of the above at once. The farther away we are the less light hits us from a given source. An equivalent scenario would be to wait until the sun is setting over your house. Then go inside, turn on

If stars are 500 light years away, are we looking at real stars today in the sky?

I'm guessing you're wondering about the implications of the light-travel time between stars and Earthly observers. The fact that the light has taken a long time to get here doesn't make the stars any less real. Many people do like to point out

What would happen if Jupiter were to suddenly turn into a star the size of the Sun?

Nothing much.Jupiter is over 5 times as far from Earth as the Sun, at best.The light we would receive from this new Sun would be 1/27th that received from the Sun, again, at most.The gravity we would experience from the new Sun would be 1/27th that we do