Space/Science « The HabitableZone

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Its a beautiful day in the neighborhood.... ER December 8, 2025 7:04 pm (Space/Science)

Alien Physiology and the Meaning of Life BuckGalaxy December 8, 2025 5:37 pm (Off-Topic)

Mit Ro Don SDG February 24, 2015 10:30 pm (Science Fiction)

How we did it in the old Navy. ER December 4, 2025 4:17 pm (CurrentEvents)

How we did it in the old Navy II. ER December 4, 2025 5:09 pm (CurrentEvents)

Rocket man BuckGalaxy December 1, 2025 9:54 pm (CurrentEvents)

Collapse of the service access platform at Site 31 in Baikonur? BuckGalaxy November 27, 2025 12:54 pm (Space/Science)

SR72 RobVG November 20, 2025 1:00 pm (Off-Topic)

All I know is what I see on the Internet. ER November 30, 2025 7:21 am (CurrentEvents)

Yesterday was the 332nd day of the year 2025 ER November 30, 2025 1:41 pm (Space/Science)

Xi called Trump RobVG November 24, 2025 10:26 am (CurrentEvents)

"Pluribus" RobVG November 10, 2025 9:06 am (Science Fiction)

Anyone bought a quadcopter yet? by bowser February 14, 2015 7:24 pm

I have an ARES spectre X by SDG 2015-02-24 22:04:00
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How do those things work? by hank 2015-02-14 19:49:28
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- Depends on what you spend. by bowser 2015-02-14 20:58:11
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DSCOVR by Raoul February 12, 2015 10:26 pm

My 9 X 63 binoculars. by bowser 2015-02-13 20:12:04
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The Bareback Nooner by ER February 13, 2015 6:03 am

Ambushing 2004 BL 86 by ER January 25, 2015 9:47 pm

I caught XP14 on July 3 2006 by RobVG 2015-01-28 19:36:36
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- Shoemaker - Levy, 1994 by bowser 2015-02-05 17:22:48
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finder charts by ER 2015-01-26 13:07:25
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Hey, good luck. by bowser 2015-01-26 11:06:33
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Enzyme breakdown. by ER 2015-01-26 04:54:55
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- Nailed it! by ER 2015-01-26 21:59:07
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  - Well done! I didn't see this reply before. n/t by RobVG 2015-01-28 19:39:14
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    - Its no wonder people think we stargazers are geek crazy. by ER 2015-01-29 05:04:36
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  - Good job, better description. by bowser 2015-01-28 16:38:42
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The January numbers by ER February 4, 2015 8:25 pm

Artificial Gravity by ER January 15, 2015 8:44 pm

Another minor issue . . . by DanS 2015-01-21 09:48:19
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- Spin gravity by TB 2015-01-21 10:04:24
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  - I was assuming . . . by DanS 2015-01-21 11:35:12
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    - Nope. by TB 2015-01-21 12:25:33
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      - Heinlein's was sort of what I was working on . . . by DanS 2015-01-22 09:53:40
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        We may not need a full 1 g to ensure human health. by ER 2015-01-22 12:23:44
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    - TB is right. by ER 2015-01-21 12:17:25
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Hubble images by johannes January 9, 2015 8:55 am

Not sure . . . by DanS 2015-01-09 10:57:37
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December Arctic Ice Report by ER January 8, 2015 10:35 am

Worldwide retreat of glaciers confirmed in unprecedented detail by hank January 2, 2015 8:33 pm

Mars Methane by johannes December 17, 2014 10:09 am

Life can be defined as that which has/consumes/produces energy . . . by DanS 2014-12-19 05:15:34
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- The hills are alive. by johannes 2014-12-23 11:05:06
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  - Still trying to figure out death . . . by DanS 2014-12-24 04:31:14
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    - Life and death are conceptual realities, but not necessarily absolutes. by johannes 2014-12-24 11:14:33
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      - Matter will always contain some form of energy . . . by DanS 2014-12-24 20:13:12
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There is no difference between "living" and "non-living". by hank 2014-12-17 10:43:40
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- Interesting by johannes 2014-12-17 17:43:16
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  - No, no, no, by hank 2014-12-17 17:52:01
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    - Why? by johannes 2014-12-18 20:22:24
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      - There is no "why", only "how". by hank 2014-12-19 05:04:19
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        Hmm.... by johannes 2014-12-23 11:17:33
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        "but since water contains energy, it could be considered to contain life." by hank 2014-12-23 12:58:24
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        I think that you misunderstand my quest to find the fundamental meaning of the words. by johannes 2014-12-24 11:12:04
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        No, I do not agree, and you're not paying attention. by hank 2014-12-24 19:43:49
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Rosetta Pours Cold Water on Cometary Origins of Earth’s Oceans . . . by DanS December 12, 2014 2:09 pm

I don't think isotopic abundances proves anything. by hank 2014-12-13 21:06:41
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Stellar Contrail? by ER December 14, 2014 10:01 pm

Interesting by johannes 2014-12-15 11:11:28
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- You could cover them all with the palm of your hand, held at arm's length. by ER 2014-12-15 11:39:16
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  - Map by ER 2014-12-15 12:18:24
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    - Thanks ER by johannes 2014-12-15 15:18:43
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I'm not seeing it, ER . . . by DanS 2014-12-15 08:32:01
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- Its easy to get confused... by ER 2014-12-15 10:00:15
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  - Got it . . . ! by DanS 2014-12-15 10:10:24
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    - No star is close enough for its comets to be visible to us. by ER 2014-12-15 10:22:14
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