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Old 16th September 2020, 11:50 AM   #41
dann
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I find it hard to understand this part of the ecology of hydrothermal vents - and I have a similar problem with the Venus idea:

Quote:
The hydrothermal vent microbial community includes all unicellular organisms that live and reproduce in a chemically distinct area around hydrothermal vents. These include organisms in the microbial mat, free floating cells, or bacteria in an endosymbiotic relationship with animals. Chemolithoautotrophic bacteria derive nutrients and energy from the geological activity at Hydrothermal vents to fix carbon into organic forms.
Hydrothermal vent microbial communities (Wiki)

Why aren't bacteria around those vents constantly washed away to more (to them) inhospitable environments? My guess is that many probably are, but that enough of them somehow manage to stay close enough to the vents to continue to reproduce. I just don't see how they manage to do that.
And I have the same problem with microbial life in the Venus atmosphere. They would need some kind of mechanism for (enough of) them to stay, survive and reproduce in their 'Goldilock zone'.
I hope that it will be possible for an upcoming Venus mission to dip into the upper layers of the atmosphere and return with a sample.
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Old 16th September 2020, 11:59 AM   #42
dann
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Originally Posted by Capsid View Post
The protein kinases are common to all living organisms that we know of. Although viruses share no genes across the families?

FTFY. Yes, but would the same DNA(-like) mechanism be required to produce those protein kinases? If we assume that ET lifeforms would be protein-based (and I think there's good reason to make that assumption), wouldn't similar, but not identical, ways of combining amino acids into those proteins be possible?
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"Stupidity renders itself invisible by assuming very large proportions. Completely unreasonable claims are irrefutable. Ni-en-leh pointed out that a philosopher might get into trouble by claiming that two times two makes five, but he does not risk much by claiming that two times two makes shoe polish." B. Brecht
"The abolition of religion as the illusory happiness of the people is required for their real happiness. The demand to give up the illusion about its condition is the demand to give up a condition which needs illusions." K. Marx
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Old 16th September 2020, 01:46 PM   #43
Mikemcc
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Just watched the latest Sky at Night show in the UK. EXtraordinary, they are so excited by this. The atmospheric analysis was done using two telescopes, JWMT and ALMA and the results strongly matched. They then discussed the process that the researchers used to examine as many processes that they could think of. A remarkable episode.
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Old 17th September 2020, 12:49 PM   #44
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This would explain the lack of Amazon women on the moon. They were on Venus the whole time.
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Old 17th September 2020, 03:08 PM   #45
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I don't know about Venus, but gas is leaking from Uranus.
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Old 21st September 2020, 08:03 AM   #46
Samson
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We are expecting to find life on Mars and just found it on Venus.
Nice.
It must be everywhere, yet just 4 amino acids collect on earth for a common ancestor.
Scientists are barking mad to believe all this nonsense.
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Old 21st September 2020, 10:05 AM   #47
Lukraak_Sisser
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Any scientist that believes there just 4 amino acids is barking mad indeed.
So are those commenting on biochemistry while showing such utter ignorance in my personal opinion though.
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Old 21st September 2020, 10:14 AM   #48
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Let's not malign the mad. Where is the evidence that they bark?
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Old 21st September 2020, 11:02 AM   #49
dann
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Two new articles:
The detection of phosphine in Venusí clouds is a big deal Ė hereís how we can find out if itís a sign of life (Conversation, Sep. 18, 2020)
If there is life on Venus, how could it have got there? Origin of life experts explain (Conversation, Sep. 20, 2020)
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"Stupidity renders itself invisible by assuming very large proportions. Completely unreasonable claims are irrefutable. Ni-en-leh pointed out that a philosopher might get into trouble by claiming that two times two makes five, but he does not risk much by claiming that two times two makes shoe polish." B. Brecht
"The abolition of religion as the illusory happiness of the people is required for their real happiness. The demand to give up the illusion about its condition is the demand to give up a condition which needs illusions." K. Marx
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