Sharp Martian ridges sticking up from the dust
Click for full image.
Today’s cool image brings us back to the region of Mars where the rover Opportunity journeyed. Taken on June 25, 2020 by the high resolution camera on Mars Reconnaissance orbiter (MRO), the photo to the right, cropped and reduced to post here, focuses on some sharp but low ridges that appear to stick up out of the Martian dust, hinting that they are the tops of some larger feature buried over the eons and only now revealed partly by recent erosion. I estimate that their height is roughly one to two hundred feet or so.
This image is in Arabia Terra, the widest and largest transitional zone region between the northern lowland plains and the southern cratered highlands. It is also only about 200 miles north of where Opportunity landed, and about 230 miles from where it died after almost fifteen years of operation, on the west rim of Endeavour Crater. The overview map below gives the context.
The red rectangle indicates the location of this image. The black squiggly line indicates the path that Opportunity took during its fifteen years on Mars, traveling to the southeast to reach the western rim of Endeavour.
This part of Arabia Terra seems somewhat boring from a distance, an endless vista of craters, with no major mountains or channels or canyons or anything big and spectacular. As is usually the case, that distant view gives an incorrect impression. On a human scale close-up, there is plenty of interesting stuff hidden among these craters. Opportunity during its journey illustrated this. So does the photo above.
We just have to get close enough. For example, the large faint crater just to the east of today’s photo is dubbed Vernal Crater. On its floor just inside its southern rim are features that some scientists believe are inactive hot springs. While the evidence is tenuous, the geology remains intriguing and tempting.
There is a lot of similar stuff surely hidden in this vast terrain. It only requires us to go and look to find it.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Click for full image.
Today’s cool image brings us back to the region of Mars where the rover Opportunity journeyed. Taken on June 25, 2020 by the high resolution camera on Mars Reconnaissance orbiter (MRO), the photo to the right, cropped and reduced to post here, focuses on some sharp but low ridges that appear to stick up out of the Martian dust, hinting that they are the tops of some larger feature buried over the eons and only now revealed partly by recent erosion. I estimate that their height is roughly one to two hundred feet or so.
This image is in Arabia Terra, the widest and largest transitional zone region between the northern lowland plains and the southern cratered highlands. It is also only about 200 miles north of where Opportunity landed, and about 230 miles from where it died after almost fifteen years of operation, on the west rim of Endeavour Crater. The overview map below gives the context.
The red rectangle indicates the location of this image. The black squiggly line indicates the path that Opportunity took during its fifteen years on Mars, traveling to the southeast to reach the western rim of Endeavour.
This part of Arabia Terra seems somewhat boring from a distance, an endless vista of craters, with no major mountains or channels or canyons or anything big and spectacular. As is usually the case, that distant view gives an incorrect impression. On a human scale close-up, there is plenty of interesting stuff hidden among these craters. Opportunity during its journey illustrated this. So does the photo above.
We just have to get close enough. For example, the large faint crater just to the east of today’s photo is dubbed Vernal Crater. On its floor just inside its southern rim are features that some scientists believe are inactive hot springs. While the evidence is tenuous, the geology remains intriguing and tempting.
There is a lot of similar stuff surely hidden in this vast terrain. It only requires us to go and look to find it.
On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.
The print edition can be purchased at Amazon or from any other book seller. If you want an autographed copy the price is $60 for the hardback and $45 for the paperback, plus $8 shipping for each. Go here for purchasing details. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.
The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News
Obviously the skeleton of a Mars dragon.
Judging by the length of the shadows of the peaks… from the ground this probably looks like monument valley.