Re: Martian Time

1

Lovely!

My college roommate had some sort of hormone dysregulatory disorder where his natural day clock was like 25 or 26 hours. He kept very strange hours.


Posted by: torque | Link to this comment | 08- 1-22 10:24 AM
horizontal rule
2

It is good!

I couldn't open it on a machine not logged in to Instagram. Oddly the top bar of the browser had the title.


Posted by: Minivet | Link to this comment | 08- 1-22 10:35 AM
horizontal rule
3

https://www.npr.org/2022/07/22/1112484935/nasa-engineer-nagin-cox-mars-rover


Posted by: ogged | Link to this comment | 08- 1-22 10:44 AM
horizontal rule
4

1.2: How did they find out? I've known lots of people that kept strange hours. Actually, a lot of them were in college -- that is to say they didn't have 9-5 jobs.

I keep regular hours, but that's because I have a job that requires that I be there at a certain time. I don't believe that I'm so cosmically in tune with the 24-hour cycle.


Posted by: peep | Link to this comment | 08- 1-22 12:31 PM
horizontal rule
5

i thought all those studies that locked college students in the basement in the 70s showed that the normal clock for humans is about 24 1/2 to 25 hours or so. (more to 1 than to the cartoon - obviously it's different to reset each day than to just drift).


Posted by: chill | Link to this comment | 08- 1-22 12:32 PM
horizontal rule
6

5: I remember reading that too! Again college students!


Posted by: peep | Link to this comment | 08- 1-22 12:35 PM
horizontal rule
7

Is this because they can explore best during daylight hours on Mars? Does the Rover have headlights? Is the Rover solar-powered?


Posted by: peep | Link to this comment | 08- 1-22 12:37 PM
horizontal rule
8

Is the Rover solar-powered?

Spirit and Opportunity were, but the current one is apparently nuclear-powered.


Posted by: teofilo | Link to this comment | 08- 1-22 1:25 PM
horizontal rule
9

8: Thanks, teo!

From that link -- It provides engineers with a lot of flexibility in operating the rover (e.g., day and night, and through the winter season)

So, Rover could work at night.


Posted by: peep | Link to this comment | 08- 1-22 1:34 PM
horizontal rule
10

5: due to budget cuts, we'll be combining the replication studies of the marshmallow, prison, and various sleep experiments.


Posted by: grant funding agency | Link to this comment | 08- 1-22 1:38 PM
horizontal rule
11

The Stanford martianmallow experiment


Posted by: fake accent | Link to this comment | 08- 1-22 1:42 PM
horizontal rule
12

The link in the OP doesn't work for me, but is it anything to do with this? My uncle is involved with that. If so, cool.


Posted by: Cyrus | Link to this comment | 08- 1-22 3:00 PM
horizontal rule
13

See 3.


Posted by: Moby Hick | Link to this comment | 08- 1-22 3:02 PM
horizontal rule
14

I am pretty sure my natural day has gotten shorter over the past few decades. In my teens and twenties, 24 hours was too short for me to be tired enough to sleep and then sleep enough to feel refreshed. Now it seems just right, but I feel like I'm edging towards it being slightly too long. Like wanting to go to bed increasingly early, and feeling off all day if I sleep an hour or two extra.


Posted by: heebie | Link to this comment | 08- 1-22 3:50 PM
horizontal rule
15

13: It's not enough we're expected to read the OP, now we have to follow links in comments too? Ugh. Seriously though, thanks.


Posted by: Cyrus | Link to this comment | 08- 1-22 5:18 PM
horizontal rule
16

Lovely, and very .... restful (which is what the author was aiming at, I guess). I was able to read it in Chrome by using incognito mode.


Posted by: Chetan Murthy | Link to this comment | 08- 1-22 8:10 PM
horizontal rule
17

This brought to my mind this Seu Jorge cover of David Bowie's Life on Mars:

https://www.youtube.com/watch?v=M05dpNBFTE0

The whole album is great btw - IIRC it was the soundtrack to The Life Aquatic.


Posted by: carrotflowers | Link to this comment | 08- 2-22 6:12 AM
horizontal rule
18

This brought to my mind this Seu Jorge cover of David Bowie's Life on Mars:

https://www.youtube.com/watch?v=M05dpNBFTE0

The whole album is great btw - IIRC it was the soundtrack to The Life Aquatic.


Posted by: carrotflowers | Link to this comment | 08- 2-22 6:12 AM
horizontal rule
19

Somewhat humorless response to 5: I think those studies about the "natural clock" are pretty junky, or at least easy to misinterpret. The human system's clock is evolved to be reset by daylight, and thus on a regular schedule. What such a clock does when it is unexpectedly free-running, instead of being reset daily, doesn't tell you very much about what is normal.


Posted by: Nathan Williams | Link to this comment | 08- 2-22 6:59 AM
horizontal rule
20

19: At least with mice, I believe they experimented with different regular cycles and found major impacts on longevity.


Posted by: Minivet | Link to this comment | 08- 2-22 7:15 AM
horizontal rule
21

It wouldn't be that hard to run a basement experiment with alternate faux-sun and -night settings.


Posted by: heebie | Link to this comment | 08- 2-22 7:19 AM
horizontal rule
22

19. If the human clock evolved to be reset by daylight, I can see how that would work in tropical Africa where we evolved it. But what happens to your natural clock if you live in Greenland or Tierra del Fuego? You still have to acquire food and eat it, even in midwinter. A light dependent cycle would put a hell of a crimp in your hunting and gathering routines.


Posted by: chris y | Link to this comment | 08- 2-22 8:35 AM
horizontal rule
23

I remember going above the Arctic circle in Norway during the summer and seeing a sign at a ski area that said something like "night skiing [i.e. with lights on specific routes] lasts from November to February."


Posted by: fake accent | Link to this comment | 08- 2-22 11:44 AM
horizontal rule
24

Whatever natural clock humans have can clearly be overridden in practice, as evidenced by thousands of years of human occupation in the Arctic as well as stuff like the Mars scientists in the OP.


Posted by: teofilo | Link to this comment | 08- 2-22 11:56 AM
horizontal rule
25

5. I thought that was the basis for some fringe belief that humans colonized Earth from some other planet with a longer synodic day? (Upon googling it looks like it's less an established fringe than just one self-published kook named Ellis Silver.)


Posted by: jms | Link to this comment | 08- 2-22 12:04 PM
horizontal rule
26

Why I'm skeptical of those studies that suggest teenagers would learn more effectively if school started at ten or whatnot.


Posted by: Eggplant | Link to this comment | 08- 2-22 12:05 PM
horizontal rule
27

Why I'm skeptical of those studies that suggest teenagers would learn more effectively if school started at ten or whatnot.


Posted by: Eggplant | Link to this comment | 08- 2-22 12:05 PM
horizontal rule
28

Couldn't there be a biological difference between how you're affected by length of day vs. by length of the total day-night cycle?

I know people and animals can adjust to the sun rising much earlier or later, but day and night still add up to 24 hours as long as you're outside the Arctic or Antarctic Circle*. It seems a different proposition to adjust to, say, day and night being 6 hours each, or 18. The planet has only slowed down marginally over the aeons (23.5-hour day in the Cretaceous).

Of course the sol being 24.6 hours is not a huge difference, but different daylight cues every day would be weird in a third way.


Posted by: Minivet | Link to this comment | 08- 2-22 12:06 PM
horizontal rule
29

*And even there there's a day-night cycle much of the year, depending how close to the pole you are.


Posted by: Minivet | Link to this comment | 08- 2-22 12:07 PM
horizontal rule
30

Just get yourself a dog to enforce an early bedtime and a cat for an early wake up call and you'll adapt.


Posted by: Eggplant | Link to this comment | 08- 2-22 12:07 PM
horizontal rule
31

Turn 45 and let your bladder wake you at 6:30.


Posted by: Moby Hick | Link to this comment | 08- 2-22 1:16 PM
horizontal rule
32

That'll be Jammies on Thursday!


Posted by: heebie | Link to this comment | 08- 2-22 2:18 PM
horizontal rule
33

The person I know who worked (works?) on that rover had a baby somewhere in the whole process, presumably in order to go all-in on disrupted sleep schedule.


Posted by: DaveLHI | Link to this comment | 08- 2-22 2:18 PM
horizontal rule
34

The person I know who worked (works?) on that rover had a baby somewhere in the whole process, presumably in order to go all-in on disrupted sleep schedule.


Posted by: DaveLHI | Link to this comment | 08- 2-22 2:18 PM
horizontal rule
35

I don't know what my excuse is.


Posted by: DaveLHI | Link to this comment | 08- 2-22 2:19 PM
horizontal rule
36

Happy birthday to him.


Posted by: Moby Hick | Link to this comment | 08- 2-22 2:21 PM
horizontal rule
37

Mostly I feel bad for the poor shmucks who study Jupiter.


Posted by: heebie | Link to this comment | 08- 2-22 4:02 PM
horizontal rule
38

Sounds like Earth time isn't so stable after all.


Posted by: fake accent | Link to this comment | 08- 3-22 9:04 PM
horizontal rule
39

31. Turn 65 and you'll be taking a cocktail of meds to stop it waking you every hour through the night. Sleeping till 6.30 will be a happy memory.


Posted by: chris y | Link to this comment | 08- 4-22 9:32 AM
horizontal rule