justinater22

How do Partice Accelerator's work? How do they speed the particles up so that it gets so close to the speed of light? Also what are particle accelerators used for?

That's what I want to know how does it theoretically make the universe expand?

It is possible only for it to protect a vehicle in space and all it's passengers it would need to be really big. Since it is so big it would have trouble launching and then there's that whole space for the crew problem. And if you use less then enough to protect everyone it could have no or negative benefit.

Sorry I didn't realise.

Actually there is tons of research being done in this NASA is focusing on materials that will block more radiation then aluminum does. But some are thinking about shields the thing is these do exist in the form of magnets. So why went we using these magnets right now? They are far away. There is evidence that on the moon there are magnets the reject the suns harmful rays. The moon isn't it there are rock molded with the magnetic field from when mars was hot and had one still. Similar evidence was found on asteroids too. These magnets don't even need to be huge (which is why the idea was dropped in the first place). In fact some powerful magnets are about the size of your thumb. The problem it is still being researched and all of these materials are far away and hard to get. I guess that is the only real problem we are facing with the shield.

There are many theory's suggesting different things. Some think it came from a parent universe in which we are the creation of another universe. Others believe our universe has a timeline, and in expands contracts and then expands again from that. Another is that we are just one of many universes in a multiverse. I even believe there is one that suggests that every black hole contains another universe in it self so we could just be the inside of a black hole. So when a black hole formed a white hole was formed that acted as a valve and shot out all of the mass in our universe. One of the most popular is string theory which has the possiblity of what could be before the bigbang if it was prooved true. The thing is if we can't see it people will speculate, any of those theory's could be correct but because we can't go into a black hole our leave our universe or see any evidence it shrinks we can't know for sure. Scientists are looking for if another universe might have smashed into ours leaving a mark. Determining if dark energy is real or not could make some theory's impossible like the falling back together. But I don't think it is truly possible to ever know for sure unless we can check out some black holes, see the universe shrink, or noticing a universe colliding with ours. A good source for other theories is howstuffworks.com type in what was before the Big Bang.

How can u guess at what genotype eye color your parents, and grandparents had? What eye colors are dominant and recessive? Do the colors mix? I ask this because my family has asked this question because my aunt has blue eyes and my uncle has brown eyes. Two kids have either blue or green but the third has a brown or hazel color. How is this possible?

I am fairly new to astronomy but very interested in learning all I can. Right now I'm on my own and teaching myself until I get to college. Does anyone have any references that can get me started in understanding. I have read a brief history of time and other simple books, but I know nothing about any of the math and I'm hoping to learn more in the topic of astronomy. Also I have been outside with a telescope looking around. I found some planets and major star constellations. But I'm curious in what else I can look for and maybe some books showing me what I'm even looking at. Greatly appreciated thank you!

Your theory is not possible if the Big Bang is true. This would mean that any point could be the center of the universe because every object is moving away from each other. It's like a balloon if you put dots on a balloon, and then blow it up then all the dots would separate at an equal rate. So there is no real center for which your black hole could occupy.

Oh thanks for clearing that up.

Yea I figured it wasn't both I just didn't know which one. And is it known yet how the dark energy makes the universe expand?

I believe Stephen hawking had a theory in which the black hole would get smaller and slower until it fell into itself causing some kind of explosion that would be easy to see. So to prove that you would just have to see the radiation of the explosion.

I thought once it gets smaller it takes even more time to disapate.

It is pretty clear that the universe is expanding because of the galaxies moving away from one another. But how does that work? I read that is what dark matter or dark energy does. I'm curious how dark energy could use gravity as a repulsive force, or is there another idea of how this might be happening?

But is it possible that it was big enough to still be lasting today? Very small but could it be possible?

I understand that these black holes would be smaller and would have little effect even going through the Earth. I am curious why it would not effect Earth very much and yet leave a mark if passing through a star. Also I am curious about different ideas of how they were formed (if they even do exist). From my understanding is that they are not normal black holes from supernovae but from higher density at certain points towards the begining of the universe. If they do exist what would it mean for us? Would it help prove string theory? Thanks