User:Robertinventor/Simple animals could live in Martian brines - Extended Interview with planetary scientist Vlada Stamenković: Difference between revisions
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'''''(background information):''''' Their model took account of the tilt of the Mars axis, which varies much more than for Earth (our axis is stabilized by the presence of the Moon). They found that for the last five million years conditions were particularly favorable for oxygen rich brines, and that it continues like this for ten million years into the future, as far as they ran the model. For the last twenty million years, as far back as they took their modeling, oases with enough oxygen for sponges are still possible. |
'''''(background information):''''' Their model took account of the tilt of the Mars axis, which varies much more than for Earth (our axis is stabilized by the presence of the Moon). They found that for the last five million years conditions were particularly favorable for oxygen rich brines, and that it continues like this for ten million years into the future, as far as they ran the model. For the last twenty million years, as far back as they took their modeling, oases with enough oxygen for sponges are still possible. |
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===Could |
===Could sponges survive through times when the tilt is higher?=== |
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Remarkably, as they say in the paper, present day Mars would have more oxygen available for life than early Earth had prior to 2.35 billion years ago. On Earth, photosynthesis seems to have come first, before complex multicellular life, generating the oxygen for the first animals. On Mars, with a different source for oxygen, oxygen breathers could arise before photosynthesis. They suggest in their paper that this gives broader opportunities for oxygen-breathing life on other planets. |
Remarkably, as they say in the paper, present day Mars would have more oxygen available for life than early Earth had prior to 2.35 billion years ago. On Earth, photosynthesis seems to have come first, before complex multicellular life, generating the oxygen for the first animals. On Mars, with a different source for oxygen, oxygen breathers could arise before photosynthesis. They suggest in their paper that this gives broader opportunities for oxygen-breathing life on other planets. |
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