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kzb
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kzb
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Yesterday,
01:55 PM
kzb
replied to a thread
What do you think is the most likely explanation for the Fermi paradox?
in
Life in Space
I agree with you about the Kardashev Scale and radio detection. But I can't accept that I am living in a billion-year old galactic civilisation...
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583 replies | 29156 view(s)
2019-Dec-05,
01:55 PM
kzb
replied to a thread
What do you think is the most likely explanation for the Fermi paradox?
in
Life in Space
This is pretty much my position as well. Other explanations are possible but they all have difficulties. It's possible the universe, contrary to...
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583 replies | 29156 view(s)
2019-Dec-05,
01:51 PM
kzb
replied to a thread
What do you think is the most likely explanation for the Fermi paradox?
in
Life in Space
We are talking about intelligent and technological life, not just bacteria. I am referencing theories on the galactic habitable zone in what I...
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583 replies | 29156 view(s)
2019-Dec-04,
12:57 PM
kzb
replied to a thread
What do you think is the most likely explanation for the Fermi paradox?
in
Life in Space
Yes but the formation of suitable planetary systems might tail off long before then. The stelliferous era lasts as long as the smallest stars...
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583 replies | 29156 view(s)
2019-Dec-04,
12:51 PM
kzb
replied to a thread
What do you think is the most likely explanation for the Fermi paradox?
in
Life in Space
Well hang on no-one has proven that intelligent life can arise on a Jovian moon. The only system known to have evolved intelligent life is a...
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583 replies | 29156 view(s)
2019-Nov-20,
12:13 PM
kzb
replied to a thread
Hydrogen engines
in
Science and Technology
Just to say, there is a roadmap to fusion you know: https://en.wikipedia.org/wiki/ITER ...
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137 replies | 3949 view(s)
2019-Nov-18,
01:26 PM
kzb
replied to a thread
Sources of Milky Way luminosity by spectral class?
in
Space/Astronomy Questions and Answers
Found it: The surface brightness of the Galaxy at the Solar Neighbourhood https://core.ac.uk/download/pdf/44148460.pdf
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16 replies | 500 view(s)
2019-Nov-18,
12:45 PM
kzb
replied to a thread
What do you think is the most likely explanation for the Fermi paradox?
in
Life in Space
I don't know to be honest ! Also note the metallicity limit comes from the likelyhood of producing migrating Jupiters in the system. If this...
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583 replies | 29156 view(s)
2019-Nov-18,
12:34 PM
kzb
replied to a thread
Sources of Milky Way luminosity by spectral class?
in
Space/Astronomy Questions and Answers
(1) No but Dave241 did. (2) I believe that 2008 picture is out of date. The structure of the galaxy is still somewhat controversial, even the...
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16 replies | 500 view(s)
2019-Nov-14,
03:04 PM
kzb
replied to a thread
Hydrogen engines
in
Science and Technology
Surely methane would be the go-to choice on a farm?
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137 replies | 3949 view(s)
2019-Nov-14,
10:21 AM
kzb
replied to a thread
Sources of Milky Way luminosity by spectral class?
in
Space/Astronomy Questions and Answers
That picture was out of date before it was published. I wouldn't take it too seriously. There have been several publications on the luminosity of...
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16 replies | 500 view(s)
2019-Nov-13,
06:05 PM
kzb
replied to a thread
Sources of Milky Way luminosity by spectral class?
in
Space/Astronomy Questions and Answers
The solar neighbourhood is reportedly under-luminous compared to the average for the galactic radius. We're not in a spiral arm.
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16 replies | 500 view(s)
2019-Nov-13,
06:03 PM
kzb
replied to a thread
Sources of Milky Way luminosity by spectral class?
in
Space/Astronomy Questions and Answers
No-one has measured the magnitude of the MW from outside -it is a calculated number ! So someone knows how to do it from estimates of the stellar...
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16 replies | 500 view(s)
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