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Comment by julienchastang | Hacker News Reader

For those of you commuting through GCT tonight, look up at the main course ceiling. The ceiling was cleaned in the mid-1990s, but they purposely did not clean a small area to show the drastic change. You can actually see it in this picture

https://upload.wikimedia.org/wikipedia/commons/7/7b/NYC_Gran...

Look in the upper-right corner by the ecliptic.

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Yes, mm hmm, the ecliptic. Right. I see it for sure. Couldn't be more clear. But maybe you could circle it for others?

There are two major yellow curves that cross the center of the image, one plain, the other segmented into a yellow "dotted line", although perhaps "dashed line" is a better term for it.

Follow this "dashed line" to very near the top right of the image, past the crab, to the place where it meets the border with white marble, and then just below that, on the marble border is the small square that is basically black.

Thanks. The tiny bit that goes into the white marble?

https://cnet3.cbsistatic.com/img/eHxpJnqbcVpUw3pRhT5SYFwf4fY...

Near the top right of the image

I am not seeing it, either.

The hand of one of the Gemini twins?

This was due to coal-fired trains? Cigarettes?

Don't forget coal fired heating, and the air prior to clean air legislation. Smogs were a common occurrence and included industrial and coal smoke. Much like is seen in China and India today.

Smogs were not just of Victorian London. :)

Yes. Yes. And decades of accumulated grime.

GCT has never had a coal fired train in it - its always been an electric only station, Penn is the same.

While that's true, it was only until 2003 smoking was banned completely from GCT.

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