apart from hydrogen and helium what the four most common elements in the universe? Is this the same ratio for earth or is our planet different for some reason or we could take our solar system and compare with recently discovered planetry systems elsewhere and if they have the same elements could we assume that life is present or is being formed.
elements
- Thread starter sulphur
- Start date
kaotic
Learn physics
I don't really understand it but I will give it my best shot.
Well yeah we could use our planet to compare to other planets out side of our solar system. I think we will be able to use a super strong telescope and be able to see the planets around the star so we could tell if they are life earth.
But if we want to find planets like ours so that maybe one that we could use we could use our planet to find other like earth.
Well yeah we could use our planet to compare to other planets out side of our solar system. I think we will be able to use a super strong telescope and be able to see the planets around the star so we could tell if they are life earth.
But if we want to find planets like ours so that maybe one that we could use we could use our planet to find other like earth.
Upvote
0
DNAunion: I did a quick Google search on "cosmic abundance elements" and the first site answers the question.
http://www.angelfire.com/on2/daviddarling/elcosmic.htm
In order,
Hydrogen
Helium
Oxygen
Carbon
Neon
Nitrogen
http://www.angelfire.com/on2/daviddarling/elcosmic.htm
In order,
Hydrogen
Helium
Oxygen
Carbon
Neon
Nitrogen
Upvote
0
This site stays free and accessible to all because of donations from people like you.
Consider making a one-time or monthly donation. We appreciate your support!
- Dan Doughty and Team Christian Forums
DNAunion: Our Earth is different. Being a terrestrial (rocky) planet, it is not composed mostly of gases like hydrogen and helium (Jupiter is supposed to be close to cosmic abundance, IIRC). The bulk of the lighter elements - hydrogen and helium - were "blown out" from the area surrounding the Sun leaving behind mostly the heavier elements. Out further in our solar system - where the "blowing" was less dramatic - the elemental composition where the Jovian planets formed is, I believe, close to cosmic abundance.
Upvote
0
The major moons of jupiter are interesting in the fact that some display regular volcanic activity suggesting a terrestial activity rather than the gaseous environment of the major planet.
Upvote
0
One should be careful when discussing the moons of the gas giants. Jupiter does most of the work of heating them. Gravitational tides, rather than radioactive decay.
Upvote
0
Ganymede ,one of the largest of the moons is not affected by jupiters gavitational field to the same extent as others and displays evidence of plate tectonics
Upvote
0
This site stays free and accessible to all because of donations from people like you.
Consider making a one-time or monthly donation. We appreciate your support!
- Dan Doughty and Team Christian Forums
It's an interesting question. Everything in our solar system formed from the same cloud of matter gradually coalescing (unevenly) under its own mass. This matter came from exploding stars, where the gravitational forces created heavy elements by nuclear fusion. A hypothetical Earth-like world somewhere else in the galaxy should be made of the same stuff, but it's possible that the raw material may vary to some degree from place to place.
Upvote
0
Past plate tectonics (Although ice plates are weird enough), not current. It's considered possible this was the result of past gravitational coupling with Jupiter.
Upvote
0
It is interesting to note that that ganymede has likened more to earth than venus or mars.It has its own electro magnetic field due to an iron core and a silaceous mantle. The ice covering causes a different topography on most of the "planet" but the dark region shows what is thought is the original terrain.
Igave this example as what could happen in other planetary systems,and maybe NASA could give me more information
Then we could think our selves as one example of what is happening all over the universe.
Igave this example as what could happen in other planetary systems,and maybe NASA could give me more information
Then we could think our selves as one example of what is happening all over the universe.
Upvote
0
DNAUnion got you the six most common elements. The compostion of planets depends on the nebular cloud they formed from and that in turn depends a bit on when the nebular cloud and the solar system formed. Heavier elements (above helium and hydrogen) are made by nucleosynthesis in stars. Iron is at the bottom of the energy curve. That is, nuclear synthesis of elements up to iron will release energy. For elements heavier than iron you need to input energy. This happens during novas and supernovaes. So, to get planets rich in heavier elements you need to have solar systems that formed after there were novas and supernovas to scatter those heavier elements into the interstellar medium. Planets in globular clusters, if they exist, should be poor in heavier elements.
Organic compounds like those that compose life on earth are common on comets and on dust grains in interstellar space. They seem to form via chemical reactions rather readily. There are also several different ways those compounds can form on a planet. The Miller-Urey experiments are only one way. Life formed on earth at least 3.8 billion years ago, only 0.7 billion years after the solar system began forming. That implies that life can arise quite readily. So, if you have a planet in the liquid water range of a star and have some carbon, nitrogen, and oxygen present, the likelihood of life on that planet producing life should be high.
However, I hate assumptions like you pose. The data we have says it's possible. But we won't really know until we get a chance to observe. Until then, it's an unanswered question.
Upvote
0
This site stays free and accessible to all because of donations from people like you.
Consider making a one-time or monthly donation. We appreciate your support!
- Dan Doughty and Team Christian Forums
Above Fe elements will require an energy input to produce energy? How about putting a large amount amount of fissionable material or element together and see what happens The scattering of these heavier ele ments must have occured during the formation of our solar system as they are present on earth and why not any other lucky planet.Why assume no other planetry system has gone through the same processes.You do not mention sulphur and phosphorus also essential for life.Evidence of carbonaceous meteorites hitting earth prior ti 3.8 billion may point to life existing before life appeared onearth.The first part of the question was a gimme.If you hate these type of questions ignre them
Upvote
0
Similar threads
