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

Skip to comments.

Astronomy Picture of the Day - When Z is for Mars
https://apod.nasa.gov/apod ^ | 15 Apr, 2023 | Image Credit & Copyright: Tunc Tezel (TWAN)

Posted on 04/15/2023 12:38:45 PM PDT by MtnClimber

Explanation: A composite of images captured about a week apart from mid August 2022 through late March 2023, this series traces the retrograde motion of ruddy-colored Mars. Progressing from lower right to upper left Mars makes a Z-shaped path as it wanders past the Pleiades and Hyades star clusters, through the constellation Taurus in planet Earth's night sky. Seen about every two years, Mars doesn't actually reverse the direction of its orbit to trace out the Z-shape though. Instead, the apparent backwards or retrograde motion with respect to the background stars is a reflection of the orbital motion of Earth itself. Retrograde motion can be seen each time Earth overtakes and laps planets orbiting farther from the Sun, the Earth moving more rapidly through its own relatively close-in orbit. High in northern hemisphere skies the Red Planet was opposite the Sun and at its closest and brightest on December 8, near the center of the frame. Seen close to Mars, a popular visitor to the inner Solar System, comet ZTF (C/2022 E3), was also captured on two dates, February 10 and February 16.


TOPICS: Astronomy; Astronomy Picture of the Day; Science
KEYWORDS: mars; 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 04/15/2023 12:38:45 PM PDT by MtnClimber
[ Post Reply | Private Reply | View Replies]

To: MtnClimber

2 posted on 04/15/2023 12:39:05 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: 21stCenturion; 21twelve; 4everontheRight; abb; AFB-XYZ; AFPhys; Agatsu77; America_Right; ...
Pinging the APOD list.

🪐 🌟 🌌 🍔


3 posted on 04/15/2023 12:39:47 PM PDT by MtnClimber (For photos of Colorado scenery and wildlife, click on my screen name for my FR home page.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

Is that its “pronoun”?


4 posted on 04/15/2023 1:00:29 PM PDT by Larry Lucido (Donate! Don't just post clickbait!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: MtnClimber

It kind of reminds me of the movie “Close Encounters Of The Third Kind”.


5 posted on 04/15/2023 1:13:14 PM PDT by No name given (Anonymous is who you’ll know me as.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

nice


6 posted on 04/15/2023 1:18:42 PM PDT by BenLurkin (The above is not a statement of fact. It is either opinion, or satire, or both.)
[ Post Reply | Private Reply | To 2 | View Replies]

To: MtnClimber

Interesting.


7 posted on 04/15/2023 1:20:17 PM PDT by Beowulf9
[ Post Reply | Private Reply | To 1 | View Replies]

To: MtnClimber

https://www.youtube.com/watch?v=rXqWCeB8Vto


8 posted on 04/17/2023 6:38:02 AM PDT by Red Badger (Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
[ Post Reply | Private Reply | To 2 | 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