Free Republic
Browse · Search
General/Chat
Topics · Post Article

Skip to comments.

Astronomy Picture of the Day - Equinox at Saturn
NASA ^ | 22 Sep, 2025 | Image Credit & Copyright: Imran Sultan

Posted on 09/22/2025 1:17:58 PM PDT by MtnClimber

Explanation: On Saturn, the rings tell you the season. On Earth, today marks an equinox, the time when the Earth's equator tilts directly toward the Sun. Since Saturn's grand rings orbit along the planet's equator, these rings appear most prominent -- from the direction of the Sun -- when the spin axis of Saturn points toward the Sun. Conversely, when Saturn's spin axis points to the side, an equinox occurs, and the edge-on rings are hard to see from not only the Sun -- but Earth. In the featured montage, images of Saturn between the years of 2020 and 2025 have been superposed to show the giant planet passing, with this year's equinox, from summer in the north to summer in the south. Yesterday, Saturn was coincidently about as close as it gets to planet Earth, and so this month the ringed giant's orb is relatively bright and visible throughout the night.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: apod; nasa
To be added or removed from the Astronomy Picture of the Day ping list please send me a request via "Private Reply" (Mail).

For more detail go to the link and click on the image for a high definition image. You can then move the magnifying glass cursor then click to zoom in and click again to zoom out. When zoomed in you can scan by moving the side bars on the bottom and right side of the image.

1 posted on 09/22/2025 1:17:58 PM PDT by MtnClimber
[ Post Reply | Private Reply | View Replies]

To: MtnClimber

2 posted on 09/22/2025 1:18:18 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: 21stCenturion; 21twelve; 4everontheRight; A Navy Vet; A_perfect_lady; abb; AFB-XYZ; AFPhys; ...
Pinging the APOD list

🪐 🌟 🌌 🍔

3 posted on 09/22/2025 1:18:59 PM PDT by MtnClimber (For photos of scenery, wildlife and climbing, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

The rings are now practically edge on, so the “good” views of Saturn through a backyard telescope are at least a couple of years away. :(


4 posted on 09/22/2025 1:25:57 PM PDT by simpson96
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

Wow.


5 posted on 09/22/2025 1:39:03 PM PDT by No name given ( Anonymous is who you’ll know me as )
[ Post Reply | Private Reply | To 2 | View Replies]

To: simpson96

Getting better every year from now on. They will be most open in seven years.


6 posted on 09/22/2025 1:43:32 PM PDT by zeebee (There is no cure for mental illness. )
[ Post Reply | Private Reply | To 4 | View Replies]

To: MtnClimber

Be nice to see surface images.


7 posted on 09/22/2025 1:58:35 PM PDT by SkyDancer ( ~ Am Yisrael Chai ~)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

Nice!


8 posted on 09/22/2025 2:21:03 PM PDT by telescope115 (Ad Astra, Ad Deum…)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

A wobbly planet. Like a spinning top.


9 posted on 09/22/2025 2:57:48 PM PDT by minnesota_bound (Making money now. Still want much more.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber; SunkenCiv; Red Badger

Pretty.
Very effective image. (That will never be displayed in today’s woke Afro-centric “science” textbooks. )


10 posted on 09/22/2025 3:39:45 PM PDT by Robert A Cook PE (Method, motive, and opportunity: No morals, shear madness and hatred by those who cheat.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

Beautiful, in an eerily serene way.


11 posted on 09/22/2025 4:04:41 PM PDT by AFB-XYZ (( We have two options: 1. Stand up, or 2. Bend over))
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

.


12 posted on 09/22/2025 11:25:56 PM PDT by redinIllinois (Pro-life, accountant, gun-totin' Grandma - multi issue voter )
[ Post Reply | Private Reply | To 1 | View Replies]

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
General/Chat
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson