September 22, 202100:04:01

2021 September 22 - Equinox on a Spinning Earth

In today's image, we see a 12 second video showing a year on Earth. We can see the terminator (dividing line between night and day) and how it shifts as we go through the seasons. This give one hemisphere more light during its summer and less during its winter.


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This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.


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