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From: Bob Casanova <nospam@buzz.off>
Newsgroups: talk.origins
Subject: Re: Moths can see star patterns with their compound eyes
Date: Thu, 19 Jun 2025 15:59:50 -0700
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On Thu, 19 Jun 2025 16:17:31 -0500, the following appeared
in talk.origins, posted by DB Cates <cates_db@hotmail.com>:

>On 2025-06-19 2:47 p.m., RonO wrote:
>> On 6/18/2025 11:25 AM, RonO wrote:
>>> https://www.nbcnews.com/science/science-news/moths-fly-600-miles- 
>>> particular-series-mountain-caves-scientists-think-rcna213703
>>>
>>> This is a sort of crazy science news article.  This one inch long moth 
>>> breeds in the hot lowlands of Australia, but the larva grow up and 
>>> become adults and then migrate 600 miles to caves in the Australian 
>>> alps.  They can sense the magnetic field of the earth, but it has been 
>>> discovered that they use star patterns to navigate to the caves.  They 
>>> can project star the southern star pattern in a flight chamber and the 
>>> moths will adjust their course dependent on how the star pattern is 
>>> oriented.  They don't know which direction to go if shown a random 
>>> pattern.
>>>
>>> They not only have to be able to interpret star patterns with their 
>>> compound eyes, but using the existing pattern has to be instinctive. 
>>> They may have only made the previous migration as sperm and egg cells.
>>>
>>> They have to figure out what the moths can see so that they can start 
>>> to figure out the genetics that resulted in flying in the right 
>>> direction based on that observed pattern.
>>>
>>> Moths have very small brains, but they obviously have very good visual 
>>> interpretive skills and can act on those interpretations.
>>>
>>> Ron Okimoto
>>>
>> https://www.linkedin.com/pulse/fascinating-world-moth-vision-how-eyes- 
>> help-them-navigate-gemmell
>> 
>> Article on the low light sensitivity of moth eyes.  From other articles 
>> compound eyes are good at detecting motion, and obtaining a broad 
>> perspective (the night sky), but are not very good at fine details, but 
>> they must be able to detect star patterns in a pretty crowded night sky. 
>>   In Australia the milky way stretches across the night sky.
>> 
>> Ron Okimoto
>> 
>My immediate thought (no evidence) is they may detect the orientation of 
>the milky way.
>
Possibly; according to the article that's what at least some
of them suspect.
> 
-- 

Bob C.

"The most exciting phrase to hear in science,
 the one that heralds new discoveries, is not
 'Eureka!' but 'That's funny...'"

- Isaac Asimov