are you asking about Airy and the Royal Observatory or something more obscure? I got that far earlier but the twin clue loses me

Astrographic twin telescope?
Twin Paradox?



I suspect the lagoon is something astronomical. Mickey is a date rape drug?

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You could solve from the first part alone, if you were careful with the measurements.

However you are way out with Airy.


or sounds like a twin (but isn't really)


The Lagoon is not astronomical. But "Mickey" taught us about navigation techniques at the height of her powers.

Oh, BTW

The answer is a place.....

Looks like you need help.

A minor astronomer - ?This might be subtle?

Prime meridian - ?Or the prime prime meridian?

Mars - ?Red planet in the sky. Very bright?

Twins - ?Usually refers to a constellation?

Mickey - ?Short for Michael?

Lagoon - ?Coastal Lake?

I think you're all stumped.

Hint: A minor astronomer isn't an obscure guy. You might even suggest that he was a giant or collosus in the development of science.

Hint: Look, how many prime meridians can there be?

tycho had a twin but it wouldn't have anything to do with him would it?

but there is a tycho crater on mars as well as on the moon right? Am I close. But his twin died when he was a baby I believe.

by taking the mickey does that mean he died?

No not Tycho Brahe. Can I emphasise sounds like a Twin, not actually a twin.

I have already hinted that Mickey might be Michael...

BTW

A minor astronomer - I'm proud of this clue...

oh so I'm way off right? Is michael a person?

does this have anything to do with the mars rovers?

are the twins gemini?

You mean that he was still a minor when he set up his observatory?

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Yes, but this would be a twin singular...

No, not really.

I could say A. Minor astronomer if that helps....

Michael would be a person.

Do you mean like A minor in music or A minor in a minor constellation like leo and leo minor?

No in both cases. Could be a place...

So you don't mean a minor as in degree like my minor is astronomy and my major is mathematics?

No, I don't

what about the mars rovers. They could be twins.

Very cold. Spirit and Opportunity are not part of the answer.

uncle

A minor astronomer set up his observatory on the prime meridian and named a place on mars. It sounds like his twin followed up and by taking the mickey ended up in the Lagoon. Where?

Yet more hints.

Three guys associated with the same small place are named here. Two of them are classical. Greenwich was not the first prime meridian. There is a famous Italian city on a lagoon, oh and the "A minor astronomer" is so famous he got a satellite mission named after him.

OK, so what do we have so far?

A minor astronomer? maybe Hipparchus, born in Asia Minor. Also the Hipparcos astrometry mission was named after him.

Prime meridian? Instead of Greenwich, maybe Alexandria, which was the PM in Ptolemy's Almagest.

There's a crater on Mars named after Ptolemy, not sure about Hipparchus.

Italian city on a Lagoon? Venice? I dunno. Is there a Venice observatory?

I'm drawing a blank on the Mickey.

Oh and its MER Spirit, not Freedom.

I believe that Hipparchus of Rhodes, a "Colossus" of ancient science, is the A. Minor astronomer in question. His observatory was located, ta dah, on the island of Rhodes, which he proposed as being the prime meridian, and there is a Martian crater named after him.

Ptolemy proposed using the Canary Islands as the prime meridian because of their western location. Michael of Rhodes was in the Venetician navy and wrote a manuscript on navigation.

Dave Mitsky

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Welllll is he right? would it be the mediterranean sea?

Well done. Nice and well explained. The twin is Geminus of Rhodes who extended Hipparchos's work in "Isagoge", and is credited with the Antikythera mechanism (first computer).

Your turn to set I think