. . . we may very well be alone . . . – Space/Science – HabitableZone

Space/Science

Recent posts

Recent posts

Check out 'Orrery' link in lefthand bar Arrell October 4, 2026 2:47 pm (Space/Science)
Attention Podrock and other Geologists: A geological Earth viewer Arrell October 7, 2026 11:38 pm (Space/Science)
OpenAI releases 372 more proofs and advancements in mathematics... Arrell October 7, 2026 10:31 pm (Geek Speak)
New feature Arrell October 7, 2026 9:07 pm (Space/Science)
Podrock, Pebble Arrell October 6, 2026 8:06 pm (Space/Science)
The Orrery- Your Guide to the Universe Arrell October 6, 2026 5:37 pm (Space/Science)
2026 Nobel prize in Physics-Francis Halzen, Neutrino hunter Arrell October 6, 2026 5:33 pm (Space/Science)
Planet born around dead star Arrell October 5, 2026 5:28 pm (Space/Science)
So- another feature I could explore Arrell October 4, 2026 9:07 pm (Space/Science)
Something to keep an eye on- Plague again Arrell October 5, 2026 12:06 am (Space/Science)

On this day in Space/Science

1 year ago (that week) Blasphemy 4 replies · Oct 7, 2025
5 years ago (that week) Ice on the water, fire in the sky. 0 replies · Oct 6, 2021
10 years ago (that week) September Summary 0 replies · Oct 5, 2016

Log in
Register

Space/Science » in reply to Maybe there is no substitute for chlorophyll.

. . . we may very well be alone . . .

DanS — 10/10/2013 6:33:25 PM (archived)

Agreed -- but Carl Sagan would have really hated that outcome...

Log in or register to post.

The whole thread (8 posts)

Oxygen in the news - RobVG - 10/9/2013 7:00:42 PM
- Does anyone know the spectral requirements of chlorophyll? - ER - 10/9/2013 7:23:14 PM
  - I don't think that would really matter . . . - DanS - 10/10/2013 1:59:26 PM
    - Maybe there is no substitute for chlorophyll. - ER - 10/10/2013 4:32:03 PM
      - . . . we may very well be alone . . . - DanS - 10/10/2013 6:33:25 PM
        
        I really hate it too. - ER - 10/10/2013 6:50:44 PM
        
        The Drake Equation. . . - DanS - 10/10/2013 11:31:47 PM
        
        I wouldn't put too much creedence in any of those hypotheses. - ER - 10/11/2013 1:24:34 AM

Related discussions

HabitableZone — be civil, or at least entertaining.