#analemma — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #analemma, aggregated by home.social.
-
2026 September 20
Analemma over the Callanish Stones
* Image Credit & Copyright: Giuseppe Petricca
https://www.astrobin.com/users/gmrphotographer/Explanation:
If you went outside at the same time every day and took a picture that included the Sun, how would the Sun's position change? A visual answer to that question is an analemma, a composite image taken from the same spot at the same time over the course of a year. The featured analemma was composed from images taken every few days at noon near the village of Callanish in the Outer Hebrides in Scotland, UK. In the foreground are the Callanish Stones, a stone circle built around 2700 BC during humanity's Bronze Age. It is not known if the placement of the Callanish Stones has or had astronomical significance. The ultimate causes for the figure-8 shape of this and all analemmas are the tilt of the Earth axis and the ellipticity of the Earth's orbit around the Sun. At the solstices, the Sun will appear at the top or bottom of an analemma. The featured image was taken near the December solstice and so the Sun appears near the bottom. Equinoxes, however, correspond to analemma middle points -- not the intersection point. In two days there will be an equinox ("equal night"), when day and night are equal over all of planet Earth. Many cultures celebrate a change of season at an equinox.
https://science.nasa.gov/sun/
https://en.wikipedia.org/wiki/Analemma
https://gmrphotographer.net/wordpress/2019/01/29/2017-solar-analemma-over-callanish/
https://en.wikipedia.org/wiki/Callanish
https://en.wikipedia.org/wiki/Outer_Hebrides
https://en.wikipedia.org/wiki/Scotland
https://en.wikipedia.org/wiki/United_Kingdom
https://en.wikipedia.org/wiki/Callanish_Stones
https://youtu.be/5mcPHxuVhWk
https://www.history.com/articles/bronze-age
https://www.youtube.com/watch?v=mkbEhp8hJN8
https://apod.nasa.gov/apod/ap160822.html
https://spaceplace.nasa.gov/seasons/en/
https://mathworld.wolfram.com/Ellipse.html
https://science.nasa.gov/wp-content/uploads/2022/09/Equinox_Solstice-Info-Graphic_WTS.jpg
https://apod.nasa.gov/apod/ap250615.html
https://science.nasa.gov/earth/earth-observatory/winter-and-summer-solstice-6125/
https://apod.nasa.gov/apod/ap210922.html
https://unsplash.com/photos/orange-and-brown-tabby-cat-on-pavement-near-body-of-water-0iNLhORjMGM
https://en.wikipedia.org/wiki/Equinox
http://mentalfloss.com/article/59049/autumnal-equinox-traditions
https://apod.nasa.gov/apod/ap240319.htmlhttps://apod.nasa.gov/apod/ap260920.html
#space #astronomy #astrophotography #photography #sun #analemma #NASA #apod #space_related #space_culture_Club #apod
-
2026 September 20
Analemma over the Callanish Stones
* Image Credit & Copyright: Giuseppe Petricca
https://www.astrobin.com/users/gmrphotographer/Explanation:
If you went outside at the same time every day and took a picture that included the Sun, how would the Sun's position change? A visual answer to that question is an analemma, a composite image taken from the same spot at the same time over the course of a year. The featured analemma was composed from images taken every few days at noon near the village of Callanish in the Outer Hebrides in Scotland, UK. In the foreground are the Callanish Stones, a stone circle built around 2700 BC during humanity's Bronze Age. It is not known if the placement of the Callanish Stones has or had astronomical significance. The ultimate causes for the figure-8 shape of this and all analemmas are the tilt of the Earth axis and the ellipticity of the Earth's orbit around the Sun. At the solstices, the Sun will appear at the top or bottom of an analemma. The featured image was taken near the December solstice and so the Sun appears near the bottom. Equinoxes, however, correspond to analemma middle points -- not the intersection point. In two days there will be an equinox ("equal night"), when day and night are equal over all of planet Earth. Many cultures celebrate a change of season at an equinox.
https://science.nasa.gov/sun/
https://en.wikipedia.org/wiki/Analemma
https://gmrphotographer.net/wordpress/2019/01/29/2017-solar-analemma-over-callanish/
https://en.wikipedia.org/wiki/Callanish
https://en.wikipedia.org/wiki/Outer_Hebrides
https://en.wikipedia.org/wiki/Scotland
https://en.wikipedia.org/wiki/United_Kingdom
https://en.wikipedia.org/wiki/Callanish_Stones
https://youtu.be/5mcPHxuVhWk
https://www.history.com/articles/bronze-age
https://www.youtube.com/watch?v=mkbEhp8hJN8
https://apod.nasa.gov/apod/ap160822.html
https://spaceplace.nasa.gov/seasons/en/
https://mathworld.wolfram.com/Ellipse.html
https://science.nasa.gov/wp-content/uploads/2022/09/Equinox_Solstice-Info-Graphic_WTS.jpg
https://apod.nasa.gov/apod/ap250615.html
https://science.nasa.gov/earth/earth-observatory/winter-and-summer-solstice-6125/
https://apod.nasa.gov/apod/ap210922.html
https://unsplash.com/photos/orange-and-brown-tabby-cat-on-pavement-near-body-of-water-0iNLhORjMGM
https://en.wikipedia.org/wiki/Equinox
http://mentalfloss.com/article/59049/autumnal-equinox-traditions
https://apod.nasa.gov/apod/ap240319.htmlhttps://apod.nasa.gov/apod/ap260920.html
#space #astronomy #astrophotography #photography #sun #analemma #NASA #apod #space_related #space_culture_Club #apod
-
2026 September 20
Analemma over the Callanish Stones
* Image Credit & Copyright: Giuseppe Petricca
https://www.astrobin.com/users/gmrphotographer/Explanation:
If you went outside at the same time every day and took a picture that included the Sun, how would the Sun's position change? A visual answer to that question is an analemma, a composite image taken from the same spot at the same time over the course of a year. The featured analemma was composed from images taken every few days at noon near the village of Callanish in the Outer Hebrides in Scotland, UK. In the foreground are the Callanish Stones, a stone circle built around 2700 BC during humanity's Bronze Age. It is not known if the placement of the Callanish Stones has or had astronomical significance. The ultimate causes for the figure-8 shape of this and all analemmas are the tilt of the Earth axis and the ellipticity of the Earth's orbit around the Sun. At the solstices, the Sun will appear at the top or bottom of an analemma. The featured image was taken near the December solstice and so the Sun appears near the bottom. Equinoxes, however, correspond to analemma middle points -- not the intersection point. In two days there will be an equinox ("equal night"), when day and night are equal over all of planet Earth. Many cultures celebrate a change of season at an equinox.
https://science.nasa.gov/sun/
https://en.wikipedia.org/wiki/Analemma
https://gmrphotographer.net/wordpress/2019/01/29/2017-solar-analemma-over-callanish/
https://en.wikipedia.org/wiki/Callanish
https://en.wikipedia.org/wiki/Outer_Hebrides
https://en.wikipedia.org/wiki/Scotland
https://en.wikipedia.org/wiki/United_Kingdom
https://en.wikipedia.org/wiki/Callanish_Stones
https://youtu.be/5mcPHxuVhWk
https://www.history.com/articles/bronze-age
https://www.youtube.com/watch?v=mkbEhp8hJN8
https://apod.nasa.gov/apod/ap160822.html
https://spaceplace.nasa.gov/seasons/en/
https://mathworld.wolfram.com/Ellipse.html
https://science.nasa.gov/wp-content/uploads/2022/09/Equinox_Solstice-Info-Graphic_WTS.jpg
https://apod.nasa.gov/apod/ap250615.html
https://science.nasa.gov/earth/earth-observatory/winter-and-summer-solstice-6125/
https://apod.nasa.gov/apod/ap210922.html
https://unsplash.com/photos/orange-and-brown-tabby-cat-on-pavement-near-body-of-water-0iNLhORjMGM
https://en.wikipedia.org/wiki/Equinox
http://mentalfloss.com/article/59049/autumnal-equinox-traditions
https://apod.nasa.gov/apod/ap240319.htmlhttps://apod.nasa.gov/apod/ap260920.html
#space #astronomy #astrophotography #photography #sun #analemma #NASA #apod #space_related #space_culture_Club #apod
-
2026 September 20
Analemma over the Callanish Stones
* Image Credit & Copyright: Giuseppe Petricca
https://www.astrobin.com/users/gmrphotographer/Explanation:
If you went outside at the same time every day and took a picture that included the Sun, how would the Sun's position change? A visual answer to that question is an analemma, a composite image taken from the same spot at the same time over the course of a year. The featured analemma was composed from images taken every few days at noon near the village of Callanish in the Outer Hebrides in Scotland, UK. In the foreground are the Callanish Stones, a stone circle built around 2700 BC during humanity's Bronze Age. It is not known if the placement of the Callanish Stones has or had astronomical significance. The ultimate causes for the figure-8 shape of this and all analemmas are the tilt of the Earth axis and the ellipticity of the Earth's orbit around the Sun. At the solstices, the Sun will appear at the top or bottom of an analemma. The featured image was taken near the December solstice and so the Sun appears near the bottom. Equinoxes, however, correspond to analemma middle points -- not the intersection point. In two days there will be an equinox ("equal night"), when day and night are equal over all of planet Earth. Many cultures celebrate a change of season at an equinox.
https://science.nasa.gov/sun/
https://en.wikipedia.org/wiki/Analemma
https://gmrphotographer.net/wordpress/2019/01/29/2017-solar-analemma-over-callanish/
https://en.wikipedia.org/wiki/Callanish
https://en.wikipedia.org/wiki/Outer_Hebrides
https://en.wikipedia.org/wiki/Scotland
https://en.wikipedia.org/wiki/United_Kingdom
https://en.wikipedia.org/wiki/Callanish_Stones
https://youtu.be/5mcPHxuVhWk
https://www.history.com/articles/bronze-age
https://www.youtube.com/watch?v=mkbEhp8hJN8
https://apod.nasa.gov/apod/ap160822.html
https://spaceplace.nasa.gov/seasons/en/
https://mathworld.wolfram.com/Ellipse.html
https://science.nasa.gov/wp-content/uploads/2022/09/Equinox_Solstice-Info-Graphic_WTS.jpg
https://apod.nasa.gov/apod/ap250615.html
https://science.nasa.gov/earth/earth-observatory/winter-and-summer-solstice-6125/
https://apod.nasa.gov/apod/ap210922.html
https://unsplash.com/photos/orange-and-brown-tabby-cat-on-pavement-near-body-of-water-0iNLhORjMGM
https://en.wikipedia.org/wiki/Equinox
http://mentalfloss.com/article/59049/autumnal-equinox-traditions
https://apod.nasa.gov/apod/ap240319.htmlhttps://apod.nasa.gov/apod/ap260920.html
#space #astronomy #astrophotography #photography #sun #analemma #NASA #apod #space_related #space_culture_Club #apod
-
2026 September 20
Analemma over the Callanish Stones
* Image Credit & Copyright: Giuseppe Petricca
https://www.astrobin.com/users/gmrphotographer/Explanation:
If you went outside at the same time every day and took a picture that included the Sun, how would the Sun's position change? A visual answer to that question is an analemma, a composite image taken from the same spot at the same time over the course of a year. The featured analemma was composed from images taken every few days at noon near the village of Callanish in the Outer Hebrides in Scotland, UK. In the foreground are the Callanish Stones, a stone circle built around 2700 BC during humanity's Bronze Age. It is not known if the placement of the Callanish Stones has or had astronomical significance. The ultimate causes for the figure-8 shape of this and all analemmas are the tilt of the Earth axis and the ellipticity of the Earth's orbit around the Sun. At the solstices, the Sun will appear at the top or bottom of an analemma. The featured image was taken near the December solstice and so the Sun appears near the bottom. Equinoxes, however, correspond to analemma middle points -- not the intersection point. In two days there will be an equinox ("equal night"), when day and night are equal over all of planet Earth. Many cultures celebrate a change of season at an equinox.
https://science.nasa.gov/sun/
https://en.wikipedia.org/wiki/Analemma
https://gmrphotographer.net/wordpress/2019/01/29/2017-solar-analemma-over-callanish/
https://en.wikipedia.org/wiki/Callanish
https://en.wikipedia.org/wiki/Outer_Hebrides
https://en.wikipedia.org/wiki/Scotland
https://en.wikipedia.org/wiki/United_Kingdom
https://en.wikipedia.org/wiki/Callanish_Stones
https://youtu.be/5mcPHxuVhWk
https://www.history.com/articles/bronze-age
https://www.youtube.com/watch?v=mkbEhp8hJN8
https://apod.nasa.gov/apod/ap160822.html
https://spaceplace.nasa.gov/seasons/en/
https://mathworld.wolfram.com/Ellipse.html
https://science.nasa.gov/wp-content/uploads/2022/09/Equinox_Solstice-Info-Graphic_WTS.jpg
https://apod.nasa.gov/apod/ap250615.html
https://science.nasa.gov/earth/earth-observatory/winter-and-summer-solstice-6125/
https://apod.nasa.gov/apod/ap210922.html
https://unsplash.com/photos/orange-and-brown-tabby-cat-on-pavement-near-body-of-water-0iNLhORjMGM
https://en.wikipedia.org/wiki/Equinox
http://mentalfloss.com/article/59049/autumnal-equinox-traditions
https://apod.nasa.gov/apod/ap240319.htmlhttps://apod.nasa.gov/apod/ap260920.html
#space #astronomy #astrophotography #photography #sun #analemma #NASA #apod #space_related #space_culture_Club #apod