What I was meaning was if planets are made by lots of particles from, space being attracted together- don't know if that's true at all- then how do lots of the same particles become attracted together to make the cores of planets different from each other rather than all of them attracting the same particles and being identical? Also, was there a time when there was nothing at all in space?If so then how did things suddenly come into being?
2006-08-21 11:07:29 · 9 answers · asked by hey_mcfly! 2 in Science & Mathematics ➔ Astronomy & Space
All planets and stars are made of the same elements as each other, the only difference being the proportions of one element compared to another. All of these elements were created by the supernova of another star somewhere else a long time ago. Gradually, the particles became attracted to each other - heavier particles being more easliy attracted to each other than lighter ones. As there are a hundred odd elements, each one a bit heavier than the next, different combinations of attractions would occur depending on where they started to collect in space and time relative to our sun (star), and therefore there are differences in the final collections rather than them all being the same.
We think there may have been a time when there was nothing at all other than space (and time did not exist) and we have a theory that there was suddenly something called the 'big bang' when things in space and time began. However, this has been challenged recently by a theory of many universes and no time at with there was nothing. But we don't know any of this for a fact and may never know the truth. Difficult stuff even to start to get your head around but a lot of fun to try!
2006-08-21 11:27:45 · answer #1 · answered by rog 1 · 1⤊ 0⤋
Not all planets are made of the same materials, though they may have originally been formed from clouds of dust that had the same make up. The point is that if one planet collected more stuff, and another less, that would make a huge difference to what happened next. A less massive planet has a lower escape velocity than a more massive one. This means that some of the lighter, more common elements may "escape" from the planet. This is why the Earth has hardly any Helium, the Helium WAS there, but escaped. Hydrogen was only kept when it bonded with Oxygen to form Water. Mars, however,which is less massive than Earth has lost most of its Oxygen and Hydrogen, and has little water. Jupiter, the most massive planet of the solar system, contains a large amount of light gas.
The current view is that the Big Bang set in place a process in which space and time came into being. So there was no time in which there was empty space, on the contrary, space was fuller than it is now, as the amount of matter and energy is supposed to be constant.
At the point of the big bang, there was a very dense hot state, contained in a very small space. It was not matter as we know it. As space expanded, structures were able to form, and eventually the particles etc that we know today were able to come into being. As the Universe expands, space will get emptier, but it is not homogeneous, matter is clotted together in certain areas, the planets, stars, galaxies. So this may not be significant to us, if we are still around.
2006-08-21 12:14:56 · answer #2 · answered by hi_patia 4 · 1⤊ 0⤋
The planets have different core materials depending on where in the solar system the were formed. Those in the outer reaches have nothing but dust and ice cores while those in the inner solar system (earth included have heavier metal cores).
There was naver a time when space was empty for when there were no particles to fill it space didn't exist, according to modern particle physics that is.
2006-08-21 11:17:47 · answer #3 · answered by Anonymous · 1⤊ 0⤋
The planets formed from the material left over as a result of our sun's formation. As the nebulous cloud condensed and began to rotate, most of the gas condensed into what is now our sun. The remaining material formed what is now the planets and the other bodies in our solar system
2006-08-23 20:13:26 · answer #4 · answered by spaceprt 5 · 0⤊ 0⤋
Before the "Big Bang" our universe didn't exist,
there where several other dimensions, slightly touching and forming singularity universes that popped in and out of existence,
one time two or more dimensions really knock together this popping into existence expanded in to our reality and filled with the energy of the knock, there was so much energy and it was so hot that it kept expanding forming a large new dimension,
as it expanded the heat spread out till it could condense into atoms of hydrogen that in turn formed gravity collapse' making more complex atoms, this has been going on for a long time,
in fact, time started with the first gravity collapse!
2006-08-23 10:43:23 · answer #5 · answered by magicMcArthur 1 · 1⤊ 0⤋
Planets, at least in our solar system, come in two varieties:
1) Gaseous giants, such as Jupiter, Saturn, Uranus & Neptune
2) Rocky midgets, such as Earth, Venus, Mars, Mercury & Pluto
2006-08-21 14:55:34 · answer #6 · answered by Amphibolite 7 · 1⤊ 0⤋
waiting made clothing. the only project i've got discovered is that a length 8 gown continuously seems to be slightly tight around the chest and shoulders yet different than that each and every thing is fantastic.
2016-12-17 14:55:29 · answer #7 · answered by schecter 4 · 0⤊ 0⤋
Big bang, but it's only a theory by a guy who wore different coloured socks. They say the Earth and Moon were as one once.
2006-08-21 11:16:08 · answer #8 · answered by just-dave 5 · 0⤊ 1⤋
the massive big bang some are dried up, some are full of gas, and some are covered in ice
2006-08-24 22:22:56 · answer #9 · answered by Anonymous · 0⤊ 0⤋