Mayan astronomers used observatories such as this one, located in the ancient city of Chichén Itzá. Windows at the top level, now partially destroyed, were strategically placed to observe the positions of sunrise and sunset and the motions of the Moon and Venus.

This photo was taken by Bruno Girin, who posted it on Flickr July 25, 2005 and released the image under CC-BY-SA terms.

This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.

Siz erkinsiz:

• ulashishga – ishlanmani nusxalash, tarqatish va uzatish
• remiks qilishga – ishni moslashtirishga

Quyidagi shartlar asosida:

• atribut – Siz tegishli litsenziyaga havolani taqdim etishingiz va oʻzgartirishlar kiritilganligini koʻrsatishingiz kerak. Siz buni har qanday oqilona yoʻl bilan qilishingiz mumkin, lekin litsenziar Sizni yoki Sizning foydalanishingizni ma'qullashini taklif qiladigan tarzda emas.
• bir xil ulashish – Agar Siz materialni remiks qilsangiz, oʻzgartirsangiz yoki unga asoslansangiz, oʻz hissalaringizni asl nusxadagi kabi bir xil yoki mos litsenziya ostida tarqatishingiz kerak.

https://creativecommons.org/licenses/by-sa/2.0CC BY-SA 2.0 Creative Commons Attribution-Share Alike 2.0 truetrue

This image was originally posted to Flickr by Bruno Girin at https://www.flickr.com/photos/16405999@N00/28484043. It was reviewed on 1 aprel 2008 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

1 aprel 2008