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Science & Technology |
NASA rover data shows Mars had ingredients needed for life |
2018-06-08 |
![]() But NASA scientists emphasized there could be non-biological explanations for both discoveries made by the Curiosity rover at a site called Gale crater, leaving the issue of Martian life a tantalizing but unanswered question. |
Posted by:Fred |
#9 |
Posted by: Skidmark 2018-06-08 20:46 |
#8 Ant hillls pls. Just a simple foto of the ant hills. |
Posted by: Besoeker 2018-06-08 18:38 |
#7 I'll get excited when the release the unphotoshopped satellite photos. |
Posted by: Woodrow 2018-06-08 17:39 |
#6 Fairbanks, Carbon-12 to carbon-13 then. https://www.youtube.com/watch?v=uCVnRIP3pIk |
Posted by: Spats Craish3482 2018-06-08 17:19 |
#5 But they see "livable planets" light years away I suggest that the Beltway crowd embark on a voyage to visit them to be sure, then. |
Posted by: Mullah Richard 2018-06-08 11:46 |
#4 But they see "livable planets" light years away. "...billions and billions..." |
Posted by: M. Murcek 2018-06-08 08:08 |
#3 Carbon 12-13-14 ratios are different for diamonds on the moon and diamonds on the earth. I guess what I am saying is each heavenly body has different ratios for sometimes different reasons. Its too early to use carbon isotope ratios to infer anything on Mars. |
Posted by: 3dc 2018-06-08 04:01 |
#2 This might not help much, Grimp old man, as carbon-14 to carbon-12 ratios are only good for dating for the last 40,000 years, and not the 3.6-2.8 billion years for the finds mentioned in the article. The ratio of normal carbon (carbon-12) to carbon-14 in the air and in all living things at any given time is nearly constant. Maybe one in a trillion carbon atoms are carbon-14. Both Carbon-12 and Carbon-13 are stable, but Carbon-14 decays by very weak beta decay to nitrogen-14 with a half-life of approximately 5,730 years. After the organism dies it stops taking in new carbon. |
Posted by: Fairbanks 2018-06-08 02:51 |
#1 What is the ratio of carbon-14 to carbon-12? |
Posted by: Chuckles Grimp5700 2018-06-08 01:20 |