File:Crater tree rings - Flickr - europeanspaceagency.png
![File:Crater tree rings - Flickr - europeanspaceagency.png](https://upload.wikimedia.org/wikipedia/commons/thumb/2/2a/Crater_tree_rings_-_Flickr_-_europeanspaceagency.png/800px-Crater_tree_rings_-_Flickr_-_europeanspaceagency.png?20220206080256)
Original file (3,240 × 1,080 pixels, file size: 7.42 MB, MIME type: image/png)
Captions
Captions
Summary
[edit]DescriptionCrater tree rings - Flickr - europeanspaceagency.png |
This feature could easily be mistaken for a tree stump with characteristic concentric rings. It’s actually an impressive birds-eye view into an ice-rich impact crater on Mars. Tree rings provide snapshots of Earth’s past climate and, although formed in a very different way, the patterns inside this crater reveal details of the Red Planet’s history, too. The image was taken by the CaSSIS camera onboard the ESA/Roscosmos ExoMars Trace Gas Orbiter (TGO) on 13 June 2021 in the vast northern plains of Acidalia Planitia, centred at 51.9°N/326.7°E. The interior of the crater is filled with deposits that are probably water-ice rich. It is thought that these deposits were laid down during an earlier time in Mars’ history when the inclination of the planet’s spin axis allowed water-ice deposits to form at lower latitudes than it does today. Just like on Earth, Mars’ tilt gives rises to seasons, but unlike Earth its tilt has changed dramatically over long periods of time. One of the notable features in the crater deposits is the presence of quasi-circular and polygonal patterns of fractures. These features are likely a result of seasonal changes in temperature that cause cycles of expansion and contraction of the ice-rich material, eventually leading to the development of fractures. Understanding the history of water on Mars and if this once allowed life to flourish is at the heart of ESA’s ExoMars missions. TGO arrived at Mars in 2016 and began its full science mission in 2018. The spacecraft is not only returning spectacular images, but also providing the best ever inventory of the planet’s atmospheric gases with a particular emphasis on geologically and biologically important gases, and mapping the planet’s surface for water-rich locations. It will also provide data relay services for the second ExoMars mission comprising the Rosalind Franklin rover and Kazachok platform, when it arrives on Mars in 2023. The rover will explore a region of Mars thought once to have hosted an ancient ocean, and will search underground for signs of life. Credits: ESA/Roscosmos/CaSSIS, CC BY-SA 3.0 IGO |
Date | Taken on 28 January 2022, 13:36 |
Source | Crater tree rings |
Author | European Space Agency |
Flickr tags InfoField | esa , european space agency , space , universe , cosmos , space science , science , space technology , tech , technology , exomars , mars , dunes , panorama , marte , solar system , sol , roscosmos |
Licensing
[edit]![w:en:Creative Commons](https://upload.wikimedia.org/wikipedia/commons/thumb/7/79/CC_some_rights_reserved.svg/90px-CC_some_rights_reserved.svg.png)
![attribution](https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/Cc-by_new_white.svg/24px-Cc-by_new_white.svg.png)
![share alike](https://upload.wikimedia.org/wikipedia/commons/thumb/d/df/Cc-sa_white.svg/24px-Cc-sa_white.svg.png)
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
- share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
![]() |
This image was originally posted to Flickr by europeanspaceagency at https://flickr.com/photos/37472264@N04/51847780878. It was reviewed on 6 February 2022 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
6 February 2022
File history
Click on a date/time to view the file as it appeared at that time.
Date/Time | Thumbnail | Dimensions | User | Comment | |
---|---|---|---|---|---|
current | 08:02, 6 February 2022 | ![]() | 3,240 × 1,080 (7.42 MB) | Red panda bot (talk | contribs) | In Flickr Explore: 2022-01-28 |
You cannot overwrite this file.
File usage on Commons
There are no pages that use this file.
Metadata
This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.
Horizontal resolution | 28.35 dpc |
---|---|
Vertical resolution | 28.35 dpc |