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Science

gtar100

(4,192 posts)

20. That life arose here without any outside influence seems more highly unlikely to me.

Reply to Chemisse (Reply #15)

Sat Dec 16, 2017, 04:57 PM

Dec 2017

Even without alien visitations or seeding from roaming asteroids, the currently accepted model of the origin of the earth is said to be the conglomeration of dust and debris coalescing around some central attractor. What was it in that mix that brought together the ingredients for life? What was the origin of that material? And what made it possible for its chemistry to support life on a planet? The complexity of material substances was already significant before this solar system was formed. At this point we can only speculate on the origins and history of the source material. But no doubt it's fascinating.

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What If Life On Earth Didn't Start On Earth? [View all] Cattledog Dec 2017 OP

I think this will make a lot of people happy and a lot of people pissed Angry Dragon Dec 2017 #1

No, it's not. Igel Dec 2017 #17

I find this not only plausible but likely. kaotikross Dec 2017 #2

Except Thou Shall Not Kill hasnt slowed us down in trying to exterminate each other... Canoe52 Dec 2017 #12

I am perfectly content with the origin of life in our own primordial sea. Chemisse Dec 2017 #3

Nobody really knows, and thats the fun of it. kaotikross Dec 2017 #4

"why people seek"? They seek the truth, even if the truth turns out to be more complicated. Bernardo de La Paz Dec 2017 #7

Really? This has nothing to do with Russia and Trump. It is not analogous. Chemisse Dec 2017 #15

We explore with an open mind what-ifs because they stimulate creativity. Bernardo de La Paz Dec 2017 #16

I am reminded of the poster in the background of Fox Molder's room on x-files. Chemisse Dec 2017 #19

That life arose here without any outside influence seems more highly unlikely to me. gtar100 Dec 2017 #20

Carbon is the basis of life on Earth. Chemisse Dec 2017 #22

"the conglomeration of dust and debris coalescing around some central attractor" - huh? Voltaire2 Dec 2017 #24

Life in Sol System might be of local origin Vogon_Glory Dec 2017 #5

I wish tRump would self-deport back to Uranus. Instead we are stuck with Hisanus. . . . nt Bernardo de La Paz Dec 2017 #6

LOL! 2naSalit Dec 2017 #9

It MAY tell us how life began on earth.... tomp Dec 2017 #8

Did we think that the words WhiteTara Dec 2017 #10

The words "we are stardust" refers to the fact that we are composed of atoms Nitram Dec 2017 #14

It just kicks the can down the road. Voltaire2 Dec 2017 #11

I think it's a plausible hypothesis. Nitram Dec 2017 #13

Life grows on a planet, in death it gets encased in rock, which in due time gtar100 Dec 2017 #18

We Are the Martians ThoughtCriminal Dec 2017 #21

How long has that asteroid been in transit? NickB79 Dec 2017 #23