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Another theory is that "someone" has "sowed" it on Earth.
A speculation, as well as any. Probabaly better, if science is the basis.

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Life in the universe probably common 2272 Aine 20-Dec-17 13:29
Re: Life in the universe probably common 436 Susan Doris 20-Dec-17 15:14
Re: Life in the universe probably common 395 D-Archer 20-Dec-17 16:17
Re: Life in the universe probably common 420 Aine 21-Dec-17 01:08
Re: Life in the universe probably common 454 D-Archer 21-Dec-17 10:54
Re: Life in the universe probably common 364 Archaic 27-Dec-17 03:43
Re: Life in the universe probably common 341 Eddie Larry 27-Dec-17 22:05
Re: Life in the universe probably common 333 Archaic 29-Dec-17 23:39
Re: Life in the universe probably common 355 Eddie Larry 30-Dec-17 05:30
Re: Life in the universe probably common 249 gulsbo 27-May-18 14:36
Re: Life in the universe probably common 215 D-Archer 28-May-18 10:30
Re: Life in the universe probably common 228 gulsbo 29-May-18 16:37
Re: Life in the universe probably common 210 D-Archer 29-May-18 17:32
Re: Life in the universe probably common 211 gulsbo 29-May-18 20:01
Re: Life in the universe probably common 211 D-Archer 30-May-18 09:43
Re: Life in the universe probably common 217 gulsbo 30-May-18 16:03
Re: Life in the universe probably common 217 gulsbo 30-May-18 16:28
Re: Life in the universe probably common 206 D-Archer 31-May-18 09:32
Re: Life in the universe probably common 217 gulsbo 11-Jun-18 06:07
Re: Life in the universe probably common 336 drrayeye 21-Dec-17 00:34
but Feynman's opinion is suspect after all...no? 359 Racho 21-Dec-17 00:49
Re: but Feynman's opinion is suspect after all...no? 375 Aine 21-Dec-17 01:07
Re: Life in the universe probably common 330 Aine 21-Dec-17 01:06
Re: Life in the universe probably common 325 drrayeye 21-Dec-17 14:06
Re: Life in the universe probably common 352 Aine 21-Dec-17 15:50
Re: Life in the universe probably common 322 D-Archer 21-Dec-17 16:06
Re: Life in the universe probably common 343 Aine 21-Dec-17 16:27
Re: Life in the universe probably common 416 D-Archer 21-Dec-17 18:54
Re: Life in the universe probably common 349 Aine 21-Dec-17 21:35
Re: Life in the universe probably common 313 D-Archer 22-Dec-17 08:51
Re: Life in the universe probably common 326 Aine 22-Dec-17 17:04
Re: Life in the universe probably common 325 D-Archer 23-Dec-17 11:11
Re: Life in the universe probably common 361 cladking 26-Dec-17 01:08
Re: Life in the universe probably common 288 Aine 26-Dec-17 17:34
Re: Life in the universe probably common 317 cladking 26-Dec-17 22:26
Re: Life in the universe probably common 202 jeffreyw 29-May-18 20:34
Re: Life in the universe probably common 218 gulsbo 30-May-18 19:29
Re: Life in the universe probably common 320 Susan Doris 21-Dec-17 16:10
Re: Life in the universe probably common 346 Aine 21-Dec-17 16:25
Re: Life in the universe probably common 322 Vanya 21-Dec-17 18:45
Re: Life in the universe probably common 324 D-Archer 21-Dec-17 16:03
Re: Life in the universe probably common 342 drrayeye 21-Dec-17 19:17
Re: Life in the universe probably common 371 D-Archer 22-Dec-17 08:56
Ingredients for Life Revealed in Meteorites That Fell to Earth 293 brett z 11-Jan-18 00:21
Re: Ingredients for Life Revealed in Meteorites That Fell to Earth 286 Aine 11-Jan-18 14:23
Re: Ingredients for Life Revealed in Meteorites That Fell to Earth 218 brett z 11-Jan-18 23:07
Blue sky thinking 278 drrayeye 11-Jan-18 18:29
Re: Blue sky thinking 262 Aine 11-Jan-18 18:55
Re: Blue sky thinking 278 drrayeye 11-Jan-18 19:24
Re: Blue sky thinking 287 Aine 11-Jan-18 19:36
Re: Blue sky thinking 290 drrayeye 11-Jan-18 22:05
Re: Blue sky thinking 288 carolb 11-Jan-18 21:14
Re: Blue sky thinking 309 brett z 11-Jan-18 23:04
Re: Blue sky thinking 319 drrayeye 11-Jan-18 23:44
Re: Blue sky thinking 281 brett z 11-Jan-18 23:55
Re: Blue sky thinking 260 drrayeye 12-Jan-18 03:19
I don't agree with your comparison 265 brett z 12-Jan-18 05:18
Maybe you misinterpreted 289 drrayeye 12-Jan-18 09:16
no, maybe you misinterpreted 286 brett z 13-Jan-18 23:24
Re: no, maybe you misinterpreted 258 Aine 14-Jan-18 00:18
Stuart Wolpert 244 drrayeye 14-Jan-18 08:10
Re: Stuart Wolpert 392 brett z 14-Jan-18 09:29
Re: Blue sky thinking 254 D-Archer 24-May-18 07:35
Life Paradigm 223 D-Archer 24-May-18 07:20
Re: Life Paradigm 260 gulsbo 26-May-18 19:02
Re: Life Paradigm 217 D-Archer 27-May-18 10:29
Re: Life in the universe probably common 241 gulsbo 26-May-18 17:38
Re: Life in the universe probably common 220 D-Archer 27-May-18 10:30
Re: Life in the universe probably common 219 gulsbo 30-May-18 19:31
Re: Life in the universe probably common 201 D-Archer 31-May-18 09:35
Re: Life in the universe probably common 306 gulsbo 31-May-18 17:47
Life Paradigm - synopsis 248 D-Archer 05-Jun-18 12:12
Re: Life Paradigm - synopsis 228 gulsbo 12-Jun-18 12:26
Re: Life Paradigm - synopsis 200 D-Archer 14-Jun-18 10:10
Re: Life Paradigm - synopsis 228 gulsbo 14-Jun-18 15:34
Re: Life Paradigm - synopsis 205 jeffreyw 14-Jun-18 17:47
Re: Life Paradigm - synopsis 409 D-Archer 15-Jun-18 12:05


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