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2021-Jan-22, 09:47 AM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

We humans have put a lot more time and effort into listening for communications (SETI) than in sending out communications to others (METI). One...

1076 replies | 78220 view(s)

2021-Jan-14, 07:59 AM

Copernicus replied to a thread Another WOW signal in Life in Space

Everyone can have dreams. Using that same argument to calculate if we are accidentally near the center of the universe. If we are within 200 million...

28 replies | 1063 view(s)

2021-Jan-14, 06:42 AM

Copernicus replied to a thread Another WOW signal in Life in Space

That is why I went along with the 1000 light years. Chances are there is probably only on civilization capable of transmitting, every 1000 light...

28 replies | 1063 view(s)

2021-Jan-12, 09:18 PM

Copernicus replied to a thread Another WOW signal in Life in Space

Agreed! It would require much less power. Perhaps 100,000 times less.

28 replies | 1063 view(s)

2021-Jan-12, 12:29 PM

Copernicus replied to a thread Another WOW signal in Life in Space

If there was a beacon, 1000 light years from earth, and it shown for one second it would take 10 billion years of earths current electric power...

28 replies | 1063 view(s)

2021-Jan-12, 10:29 AM

Copernicus replied to a thread Another WOW signal in Life in Space

There is no reasonable way to get from another solar system to our planet. Sure, a giant meteor could expel microbes from one solar system to...

28 replies | 1063 view(s)

2021-Jan-10, 06:45 PM

ToSeek replied to a thread Rate this thread option? in Forum Introductions and Feedback

I don't think it's deliberate. It's a vBulletin setting that for some reason was enabled for that forum and no other (apparently - I haven't checked...

2 replies | 177 view(s)

2021-Jan-01, 08:10 PM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

Have you seen this essay by Peter Vickers of Durham University — Alien life is out there, but our theories are probably steering us away from it? ...

1076 replies | 78220 view(s)

2021-Jan-01, 07:42 AM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

That line of argument is presumably why the idea of life on Mars gets so much attention. But we don't know whether the sort of Earthlike...

1076 replies | 78220 view(s)

2021-Jan-01, 07:21 AM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

I'd agree that Enceladus and Europa are intriguing worlds. They are two more reasons why Mars should not be thought of as the only place in the Solar...

1076 replies | 78220 view(s)

2021-Jan-01, 03:00 AM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

Do you think Venus is less likely for life than Mars? Why? Glad you mentioned sunlight and abiogenesis. It's true that the ice moons...

1076 replies | 78220 view(s)

2021-Jan-01, 01:48 AM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

When you say "than some other choices", which do you have in mind? I'd agree that current life on Mars is more likely than life on Mercury...

1076 replies | 78220 view(s)

2021-Jan-01, 12:40 AM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

I agree that current life on Mars can't be entirely ruled out. David Grinspoon's argument is that Mars isn't the most likely place in the Solar...

1076 replies | 78220 view(s)

2020-Dec-31, 07:47 PM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

I'd agree that past microbial life on Mars is quite plausible, and is an intriguing possibility. But it is very difficult (whether on Mars or Earth)...

1076 replies | 78220 view(s)

2020-Dec-28, 03:22 PM

Copernicus replied to a thread The COVID-19 Discussion Thread (OTB) in Off-Topic Babbling

My experience, with getting covid, is one day, I did have sneezing.

1197 replies | 46405 view(s)

2020-Dec-28, 02:14 AM

Colin Robinson replied to a thread What do you think is the most likely explanation for the Fermi paradox? in Life in Space

Except that behaviour comparable to war has been observed not only in chimps, but also in wolves and ants. The common factor is that all these...

1076 replies | 78220 view(s)