Thursday, January 17, 2019
Contact us    |    Advertise    |   Help    |   Cookie Policy    |   Privacy Policy    RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Spectacular 'blue' dune photographed on Mars


Posted on Friday, 28 December, 2018 | Comment icon 12 comments

Mars is full of surprises. Image Credit: NASA/JPL-Caltech/Univ. of Arizon
This unusual looking sand dune was captured on camera by NASA's Mars Reconnaissance Orbiter (MRO).
Situated within the 147-mile-wide Lyot Crater to the north of the Red Planet's equator, this impressive dune stands out within a field of regular crescent-shaped dunes on the Martian surface.

The image itself has been color enhanced, meaning that the dune does not appear blue in real life.

"Sand dunes often accumulate in the floors of craters," NASA wrote. "In this region of Lyot Crater, NASA's Mars Reconnaissance Orbiter (MRO) shows a field of classic barchan dunes on Jan. 24."

"Just to the south of the group of barchan dunes is one large dune with a more complex structure. This particular dune, appearing like turquoise blue in enhanced color, is made of finer material and/or has a different composition than the surrounding."

A high-resolution version of the image can be viewed - here.


Source: Space.com | Comments (12)

Tags: Mars

Recent comments on this story
Comment icon #3 Posted by Bunzilla on 28 December, 2018, 20:46
I hate false colour images. They can be extremely misleading. Taking a look at the actual image, which is in black and white btw, it's very different. I do have to say that it looks quite odd. The 'typical' barchan dunes being referred to are also the same darker colour as the one we're being shown, so it seems to me that they have to be comprised of a different material. But... What? Aside from the dunes, everything else in the area is light coloured.
Comment icon #4 Posted by XenoFish on 28 December, 2018, 20:51
The spice must flow.
Comment icon #5 Posted by Seti42 on 29 December, 2018, 2:04
They're only misleading if you don't know the perimeters of how they are colored. NASA wouldn't do false colored images if they didn't have a purpose for the actual researchers studying said images. NASA also has gone out if its way many, many times over the decades to explain this to lay people. Personally, I don't mind them at all. Sometimes they wind up accidentally beautiful. I say 'accidentally' because NASA is also not in the business of making art; they are doing science.
Comment icon #6 Posted by cyclopes500 on 29 December, 2018, 4:23
I'm wondering if a Dyson hoover effect is occurring. The wind containing fine hard dust strikes the crater wall, eroding softer layers of rock, but not the harder ones. The shape of the crater wall generates a circular air motion, and the lighter grains are drawn into the middle of the vortice, but not the heavier ones, due to their extra density and weight. Beach sand verses talc for example.
Comment icon #7 Posted by qxcontinuum on 29 December, 2018, 5:05
I am confused. So the Blue Dune it is actually not blue but has been color-enhanced. So the Blue Dune is a matter of fact just a mirage created artistically by humans do highlight what exactly?
Comment icon #8 Posted by Timothy on 29 December, 2018, 11:04
The answer to your question is: No.
Comment icon #9 Posted by mdbuilder on 29 December, 2018, 13:57
Presumably the underlying sand was blown in and deposited in one direction, as indicated by the ripple pattern. Then, the blue sand on top of that - without disturbing the underlying sand? How?
Comment icon #10 Posted by Bunzilla on 29 December, 2018, 17:26
Not saying that false colour images can't be beautiful, but they do tend to confuse a lot of people. The image was colourized to illustrate the difference between the darker coloured dunes and the lighter coloured sand around it. Why they chose blue, I have no idea. I almost wonder if the dunes aren't actually dunes in the sense of being made of particulates, but have hardened somehow? Then the lighter coloured sand came in after? I don't think we have anything like this on earth?
Comment icon #11 Posted by Orphalesion on 1 January, 2019, 9:31
I agree that from the perspective of us laymen who might just be interested in what other planets actually look like, these false color pictures can be very frustrating, particularly if they become part of pop culture and are treated as the
Comment icon #12 Posted by Aardvark-DK on 3 January, 2019, 9:37
Harkonnen is going there right now....hope House Atreides, get there first....


Please Login or Register to post a comment.


  On the forums
Fisherman claims to have seen MH370 crash
1-17-2019
A man whose crew allegedly witnessed the plane going down has provided investigators with the co-ordinates.
Can a DNA test determine your life expectancy ?
1-17-2019
Scientists in Edinburgh have developed a DNA risk score system to predict how long a person might live.
Dispute erupts over Egyptian pyramid stone
1-16-2019
Egypt has condemned plans to display a stone from the Great Pyramid of Giza at a museum in Edinburgh.
Next hadron collider to be four times larger
1-16-2019
Scientists at CERN are planning a successor to the Large Hadron Collider with ten times the power.
Featured Videos
Gallery icon 
Which is correct - math or maths ?
Posted 1-10-2019 | 2 comments
For years, there has been some confusion over the shorthand of the word 'mathematics'.
 
How fast does glass crack ?
Posted 12-31-2018 | 5 comments
The Slo Mo Guys attempt another intriguing slow motion experiment in their back yard.
 
The most mind-blowing space discoveries
Posted 12-28-2018 | 0 comments
A look back at some of mankind's greatest space-related discoveries.
 
The origins of Christmas
Posted 12-22-2018 | 0 comments
A look back at the origins of several modern Christmas traditions.
 
The logistics of climbing Everest
Posted 12-16-2018 | 2 comments
A look at what it really takes to reach the summit of Mt. Everest.
 
 View: More videos
Stories & Experiences
Johannesburg Men in Black
1-2-2019 | Johannesburg South Africa
 
Giant flash of light
1-2-2019 | Pomona, California
 
Terrifying unexplained screams
1-2-2019 | Dorion, Ontario, Canada
 
My name is whispered
11-9-2018 | Wish not to disclose
 
Strange numbers on arm
11-9-2018 | Charlotte, NC
 
Two experiences
10-31-2018 | Pryor, OK
 
Various experiences
10-31-2018 | Californiia
 
A transparent figure
10-31-2018 | Nigeria
 
My childhood haunting
10-29-2018 | Cincinnati, Ohio
 
Orange, hovering, atom-like figure
10-25-2018 | West kelowna
 

         More stories | Send us your story
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.712 Unexplained-Mysteries.com (c) 2001-2018
Terms   |   Privacy Policy   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ