Banshii

Say your back is to the sun, in space. There's something the size of the moon in front of you, lets say 3 times the distance the moon is from the earth. Due to the suns light reflecting off of the moon-sized object, you'd be able to see it, just as you can see the moon at night from earth. So, that object is now moving across your field of view close to the speed of light. It's big enough you can see it from that far away (I think, didn't do math but seems like it would be)... but are you far enough away to be able to see it go across your "horizon field of view" at the speed of light? Or are you too close, meaning you'd see it for a nanosecond? So, do you see where the problem lies? If you have to go even further away from the moon-sized object in order to see it for a good half minute traveling near the speed of light across your plane of view, then the moon-sized object will be too small to easily see. That means it would have to be bigger than moon-sized. It's all related.

Yes I edited my last post as you said that... then close to the speed of light.... 95% the speed of light? I'm looking for ballpark...

There is some kind of answer... because if I scaled it down to my airplane example, you could say that an object the size of an airplane can be seen for about a half minute going the speed of sound if you are standing 5-10 miles away. To see an airplane going the speed of light, you would have to be sooo far away, but the airplane isn't big enough to see from that far away, so it'd have to be bigger. How big, how far away? EDIT: Or close to the speed of light (since mass can't go that fast).

Yes! Gravity (not directly) influences light, and light has no mass. Gravity bends the space-time fabric, which light follows, therefore giving the illusion that gravity has a direct effect on light. So what does this tell us about black holes? Since light follows a path on the fabric of space-time, and light never comes back out of a black hole, this tells me that there is an infinite amount of space-time fabric inside of a Black hole... meaning that each black hole is a new Universe... with infinite space, energy, etc. Just as our Universe is. Each black hole is it's own, and we are interweaved like that over and over. I am not saying parallel universes exist. That is something different which doesn't exist. But what does exist are universes within universes within universes (black holes), but no ability to connect to another one except by the black hole that formed it. Creating a new black hole creates a new universe.

To clarify the title, How far away from an object, and how big must the object be, for you to see it travel at the speed of light for at least 30 seconds? As an example, when you are standing on the ground, you can easily see an airplane traveling faster than the speed of sound for a long while as it goes across the sky. But, for an object traveling the speed of light.... if you were in a space ship relatively staying still, what's the closest you can be in order to see an object traveling at the speed of light for 20-30 seconds, before it gets too far away (and tiny) to see? And, how big would the object need to be for you to clearly see it, as in the airplane example above?

I believe what is referred to as the "big bang" is actually where the universe started... a black hole formed in another universe, which is the beginning of a new universe. No real "infinitely dense ball of energy suddenly exploding". Just the formation of a black hole in a given universe, which creates or is the beginning to the spacetime necessary for a new universe. This also explains why our observable universe is expanding. I explained this more here: http://www.scienceforums.net/topic/87188-newcorrect-black-hole-theory-spacetime-special-relativity/

From what I understand, is that gravity can only directly affect things with mass and space itself. Light has no mass, so gravity cannot directly effect light. However, gravity does indeed effect space. It bends space. Therefore it bends spacetime. And well, light follows the curvature of space. This has been proven through experiments. So to me, that means because the gravity of a black hole is so strong, light follows the curvature of space into the black hole, and it can't escape. Otherwise we'd see it. So light follows the curvature of space, into a black hole, and keeps going forever. That said, if there was a singularity in a black hole, that means to me that the curvature of space would come to a point or singularity (of mass), for example like the mass core in the center of jupiter. If that was the case, light would be able to escape because there would be an end to the space in a black hole. But the fact of the matter is that light does not escape, which means space must be going on forever as we know it within a black hole. Think about it, light follows the curvature of space that is affected by gravity. If that space came to a point or end, light would follow the curvature of space back out of the black hole. But because this doesn't happen, we can easily assume that space in a black hole does not curve back out or end. This means there must be an infinite amount of space in a black hole. And since space and time are directly related, known now as spacetime, that means there's got to be a whole universe in a black hole. For example, OUR "bing bang", I believe, was the result of the formation of a black hole in another universe. And as a result, our known universe is basically the inside of a black hole in another universe. And because this black hole in another universe is probably being constantly fed, our universe is expanding at a faster and faster rate. Simply put, black holes are THE gateways to different universes. A universe has a black hole that leads to our universe, and our universe has black holes that lead to other universes. It's just an invinite amount of universes leading to an infinite amount of universes.

I don't understand how or what that answers. Perhaps break it up a little bit, into a more simple explanation. Or is that just a fact besides the point?

Because gravity, space/time, special relativity, (and effectively light(speed)), and mass are all related, I've been thinking... It's said in an example that (simply put), a rocket ship from earth (containing people) is sent out at almost the speed of light to 4 earth-lightyears away, and then comes back. (in this example, acceleration and deacceleration is instantaneous) 4 years go by on earth, but for the people on the rocket ship, it's only a few weeks (or something like that). It was said that it's because the clocks of the space ship people slow down (in the view of the people of earth), and/or because the distance the rocket people are traveling shrinks at high speeds.... (same thing). Whatever, moving on. Also, the faster something goes, the more mass it has. So something that goes the speed of light would have an infinite mass. And if something is traveling near the speed of light, it would therefore have a freakin huge mass, and we all know that the more mass something has, the more gravity it produces. Maybe produces isn't the right word, but you know what I mean. So this led me to some thinking about black holes.... If light cannot escape a black hole, then neither can time. If mass is going into a black hole, and light cannot even escape it, there's gonna be a whole lot of gravity, mass(as in "stuff"), space, time... everything. So I'm thinking that then theoretically, a black hole could contain an entire universe of it's own because it has it's own time/stuff/gravity/everything, that cannot escape. If a black hole is collecting time, then I think it's very likely. I don't think I believe there's a singularity in a black hole anymore, I think it's a gateway to another (new) universe that's been created by the black hole. Think about it, with infinite gravity, time, space, mass, light and all that... it's gotta be a whole universe, or atleast one in the making. As in some illustrations, black holes make what is visualized as an infinitely long downward spiral in spacetime (because of its gravity). Kind of like if you put something infinitely heavy on a net that's been spread out. It will go down forever (given that the net doesn't break). So that means there's potentially infinite space, time, gravity, mass, light and everything needed for a universe. I heard theories about black holes containing a universe, but brushed it off because it didn't make sense. But now through thinking about other things, I think believe it's possible. Am I on to something (even if this is already known) or am I just completely de-railed?

Yes I realize that pwagen. That's why I stated relative to how I am facing. But anyways, why do galaxys look like a flat shape instead of everyting orbiting randomly. Why isn't it a ball shape? What makes it choose a particular orbiting path? ACG52, if it really is random, and have nothing to do with the poles, why does each object orbiting around something stay on the same line, causing it to look flat?

What determines the direction of the gravitational field (the direction the "disk" around an object faces) of something other things orbit... such as a solar system or galaxy? For example, if I am in space and am looking forward, one galaxy might look like it's sitting horizontal according to my position, while the one next to it may be verticle. Does it have to do with only gravity? Or does magnetism come into play... like does it have to do with where the magnetic poles are of the center object.

If something 11 billion light years away blew up such as a supernova, and we are only seeing it now... doesn't that mean the universe was already as big then as it is now? If not, the only way it would make sense is if the universe is expanding twice the speed of light, or us and the "event" have been traveling in direct opposite directions.

Well I would certainly rather have a bunch of pissed off people around the world than have the entire human race wiped out. I hope at least the US leaders would see it that way as well, and use a nuke if necessary. The pros definitely out-weigh the cons there. I'd have no problem standing up and pressing the launch button if an asteroid in my face was the alternative.

Yeah I meant it as that gravity being the force causing the friction between the refrigerator and the floor. Take away the gravity, and there's barely any friction between the refrigerator and the floor.

Yes that makes perfect sense to me. That's really the same thing that was going on in my head but you put it into words a lot better than I did. Like how I mentioned the slingshot thing, you simply said moving away and falling towards at the same time. That's what I was trying to explain but couldn't put it in the right words. Thanks though, that cleared it up