Paul Horowitz talk at Google

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Profile Dr GreyProject Donor

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Message 1775819 - Posted: 2 Apr 2016, 22:09:37 UTC

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Profile Gordon Lowe
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Message 1775977 - Posted: 3 Apr 2016, 16:25:59 UTC - in response to Message 1775819.  

That was good, thanks for posting the link. It took until the last question in the Q&A for SETI@Home to get mentioned, though. ;~)
The mind is a weird and mysterious place
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Message 1776241 - Posted: 4 Apr 2016, 20:27:24 UTC - in response to Message 1775977.  

That was good, thanks for posting the link. It took until the last question in the Q&A for SETI@Home to get mentioned, though. ;~)


Yes, that made me wince a bit too
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Message 1776245 - Posted: 4 Apr 2016, 20:55:07 UTC

Yes, and the questioner seemed in real doubt that SETI@Home even still existed! Hmmm.
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Profile William Rothamel
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Message 1776292 - Posted: 5 Apr 2016, 0:21:47 UTC - in response to Message 1776245.  

I question his number of stars within 1000 lightyears of Earth and most assuredly the prevalence of "Earth-like " planets. To my mind we have not yet found a one.--What do we need to see to really say "Earth-like"
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Message 1776534 - Posted: 6 Apr 2016, 10:42:43 UTC

My definition would be along the lines:
Star of similar size and age to the sun
Rocky
Diameter between 0.75 and 1.5 earth
Orbit 0.8-1.2 compared to earth.


Some of those a probably a bit "tight", but its a starter for ten...
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Profile William Rothamel
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Message 1776588 - Posted: 6 Apr 2016, 13:13:21 UTC - in response to Message 1776534.  
Last modified: 6 Apr 2016, 13:19:00 UTC

This is a good starter set. I would add a nearly circular orbit and the presence of water. We could then look and see if these candidates possessed about another dozen parameters as well. My point is that you cannot select one in-range parameter and call it an "Earth-like" planet while ignoring another important dozen or more necessary conditions to be truly "Earth-like"

For our starter set--I don't think that we have as yet found a single one. They are probably out there but we need better surveillance capability.
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Message 1776599 - Posted: 6 Apr 2016, 13:32:53 UTC

The conditions I set out would allow for free liquid water, and give a fair chance of there being a reasonable atmosphere for things to happen in.
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Message boards : SETI@home Science : Paul Horowitz talk at Google


 
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