the earth has 75% of water so where did that come from then .when the earth cooled down . think about it the earth is in a bubble . H2O did not appear over night .
Water is one of the byproducts of burning hydrogen. One theory is that water was formed in the early universe and as the earth was formed, space debris containing water landed on the planet and eventually filled the oceans. Took a few million years. Every time hydrogen is burned in an oxygen atmosphere, water is formed
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Deleted member 26818
Comets.
Although water covers around 70-75% of the Earth's surface, water is actually a rare substance that represents just 0.02 - 0.05 % of the Earth's total mass.
H2O did not appear overnight as you correctly stated, it is believed that much of the surface water could have appeared as long ago as 4billion years.
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Squid
I also ask God to help me after 15 pints of Stella who my head is in the pan..........
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Squid
What has a dodgy electrical retailer have to do with this?
they've gone bust.you need to go to currys/pcworld now.
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Deleted member 26818
Comets is where they hypothesise the water on earth came from.
Though they now believe water could have been present at the formation of the planet.
Though they now believe water could have been present at the formation of the planet.
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They're not round, they're flat
See we have at least two flat earth society members on here.
See we have at least two flat earth society members on here.
Their Mugs https://i.Upload the image directly to the thread.com/8Y51XRy.png
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Deleted member 26818
The comet theory has been around for years, probably from way before the internet or PCs.I reckon some people have been busy Googling this afternoon.
Yep Boom Boom shake shake the room
Touchy aren't we?
All I'd say is we must be in the presence of some learned Astrophysicists.
millions of years ago, there was a Supreme Being who, being bored and fed up with eating cosmic dust and bits of rock, laboured hard and long to eventually create a cheese souffle. Unfortunately, he had the oven on too high and the resulting explosion blasted cheese all over the universe. eventually, pieces of cheese coagulated to form planets,most of which,due to gravity, turned into rock or gas ( these gaseous planets were due to the fact that in 1 of the souffles, he had added heinz beans). the only exception being the moon, which we all know is made of cheese. QED.
Said it before I could, as the earth spins the forces that are immense push the middle part out around its axis, hence the slight bulge when you look at distant pictures of earth from space.
Cosmic Snow balls , Buz!
repeat
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repeat
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Deleted member 26818
Nah, just read a lot of Sci Fi.
Flash Gordon & Spiderman taught you that?
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Darkwood
The Earth is what is called an oblate spheroid, if you were to over exaggerate this shape it would look like a pear. The equatorial bulge is created as the earth spins and to quote basic science it is inertial forced acting against gravity (advanced physics does not use these terms and explains it more indepth), as the equator is the widest point of the spin axis it is also the fastest point at approx 1000mph.
The bulge is not perceptible even on the deep space observatory full image pics, you can though use a computer to accurately measure and reveal the bulge, given the diameter of the Earth is approx 8000miles and the equatorial bulge is about 27miles that gives you a bulge of about 0.3 %.
As others have already posted gravity is what shapes our planets and becomes evident over a certain mass becoming more spherical the larger it is unless effected by external forces that may change this like a collision or even an encounter with a larger mass object whose gravitational field is far superior, oh and running out of fuel like a sun collapsing and exploding.
The bulge is not perceptible even on the deep space observatory full image pics, you can though use a computer to accurately measure and reveal the bulge, given the diameter of the Earth is approx 8000miles and the equatorial bulge is about 27miles that gives you a bulge of about 0.3 %.
As others have already posted gravity is what shapes our planets and becomes evident over a certain mass becoming more spherical the larger it is unless effected by external forces that may change this like a collision or even an encounter with a larger mass object whose gravitational field is far superior, oh and running out of fuel like a sun collapsing and exploding.
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Squid
Stuff that I have been on pornhub.............I reckon some people have been busy Googling this afternoon.
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Squid
I bet you get invited to a lot of parties ;o)))))
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Deleted member 26818
As far as I am aware, an oblate spheroid does not look anything like a pear.
More like a satsuma or tangerine.
More like a satsuma or tangerine.
Of course it's flat at top and bottom , the ice has melted off !
(where " god" was holding it ?)
..melted ice lolly up your sleeve time of year..
(where " god" was holding it ?)
..melted ice lolly up your sleeve time of year..
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Deleted member 26818
It’s an oblate spheroid because it rotates.
Centrifugal force causes it to bulge.
The faster a planet or star rotates, the more pronounced the effect becomes.
If the Earth were to rotate fast enough, it would become virtually flat.
Centrifugal force causes it to bulge.
The faster a planet or star rotates, the more pronounced the effect becomes.
If the Earth were to rotate fast enough, it would become virtually flat.
One of the key indicators the IAU specify to determine if an object is classed as a planet is if it of sufficient mass to assume a spherical shape, whereby the compression force of gravity can overcome the fluid dynamics of the objects structure and concentrate the mass toward the centre of the object in the most effective manner (a sphere).
Many asteroids are too small to become round and have very irregular shapes.
Many asteroids are too small to become round and have very irregular shapes.
Gravity, tectonic activity, varies forms of erosion.
The outer planets are mainly gas giants. So naturally they are round.
Also there not quite round the plantets tens to be bit squashed and also not very smooth. Some planet I believe Venus off the top of my head but don't quote me show massive cracks from something big smashing into it.
The outer planets are mainly gas giants. So naturally they are round.
Also there not quite round the plantets tens to be bit squashed and also not very smooth. Some planet I believe Venus off the top of my head but don't quote me show massive cracks from something big smashing into it.
Mercury has some odd cracks but the surface is fairly regular, Venus shows a lot of volcanic activity (we think) so cracks would vanish, Earth has the the great rift valley down Africa that is a massive split in the surface, but probably not from a collision, Mars has strange features but no significantly large cracks, the gas giants show no solid surface features, though some of their satellites have large cracks like Enceladus (or possibly Europa always get them mixed up) that appears as a cracked glass surface. Pluto may have been struck at some point based on the Horizons information.
Still think Google had a spike in astrophysics searches yesterday. Bet some of you found out about cubic planets.
Some of us are keen amateur cosmologists
I've been fascinated with the cosmos since a young lad. I don't claim to be an expert by any measure but I've read and studied enough to get a grasp of the basics. But everyday I learn a bit more and still get wowed by the details. The universe is a massive and amazing place and we haven't even scratched the surface of discovery yet.
Just to give you an idea of the immensity, there are more stars in the observable universe than there are grains of sand on all the beaches combined, here on Earth. There is a good chance that the majority of those stars have planets orbiting them (hundreds have been detected so far) so imagine how many planets there could be!
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