Visit the Cellar!

The Cellar Image of the Day is just a section of a larger web community: bright folks talking about everything. The Cellar is the original coffeeshop with no coffee and no shop. Founded in 1990, The Cellar is one of the oldest communities on the net. Join us at the table if you like!

 
What's IotD?

The interesting, amazing, or mind-boggling images of our days.

IotD Stuff

ARCHIVES - over 13 years of IotD!
About IotD
RSS2
XML

Permalink Latest Image

Dec 15th, 2017: Passenger pigeon

Recent Images

Dec 14th, 2017: War and Pieced
Dec 13th, 2017: I Ainít Scared of no Straw
Dec 12th, 2017: Sierra Railway No. 3
Dec 11th, 2017: Halszka
Dec 10th, 2017: Tuturumuri School
Dec 9th, 2017: Stretchers
Dec 8th, 2017: Wounded Warrior

The CELLAR Tip Mug
Some folks who have noticed IotD

Neatorama
Worth1000
Mental Floss
Boing Boing
Switched
W3streams
GruntDoc's Blog
No Quarters
Making Light
darrenbarefoot.com
GromBlog
b3ta
Church of the Whale Penis
UniqueDaily.com
Sailor Coruscant
Projectionist

Link to us and we will try to find you after many months!

Common image haunts

Astro Pic of the Day
Earth Sci Pic of the Day
We Make Money Not Art
Spluch
ochevidec.net
Strange New Products
Geisha Asobi Blog
Cute animals blog (in Russian)
20minutos.es
Yahoo Most Emailed

Please avoid copyrighted images (or get permission) when posting!

Advertising

Philadelphia Pawn Shop
The best real estate agent in Montgomery County
The best T.38 Fax provider
Epps Beverages and Beer, Limerick, PA
Sal's Pizza, Elkins Park
Burholme Auto Body, Philadelphia
Coles Tobacco, Pottstown
ERM Auto Service, Glenside
Glenside Collision
Moorehead Catering, Trappe
Salon 153, Bala
Dominicks Auto Body, Phoenixville

   Undertoad  Tuesday Sep 10 02:51 PM

9/10/2002: Mars dust devil



A few weeks back we had a nice shot of a set of dust devils. Now the Astronomy Pic of the Day shows us that dust devils also occur on MARS.

Astronomers would sometimes notice new dark trails on the surface. Finally they figured out that these were left by dust devils, and in this shot there is actually a dust devil - on top there, climbing that incline. Martian dust devils can be up to 8 kilometers high. Damn.



MaggieL  Tuesday Sep 10 03:59 PM

High-resolution image of the source is now available



Slithy_Tove  Tuesday Sep 10 11:56 PM

Damn. That's fascinating. I would have thought the Martian atmosphere was too thin to support whirlwinds.

It also must mean that there must be considerable non-circular wind on Mars, because if there weren't, the planet would be covered with dust devil tracks, like the one in the picture. Something must be sweeping them away on a regular basis.



jaxomlotus  Thursday Sep 12 09:14 AM

Quote:
Originally posted by Slithy_Tove
Damn. That's fascinating. I would have thought the Martian atmosphere was too thin to support whirlwinds.

It also must mean that there must be considerable non-circular wind on Mars, because if there weren't, the planet would be covered with dust devil tracks, like the one in the picture. Something must be sweeping them away on a regular basis.
Actually, I think that dark trail is a shadow from the dust devil, not a track left behind by it's movement (which shows just how tall it is)


perth  Thursday Sep 12 09:35 AM

Quote:
Originally posted by jaxomlotus


Actually, I think that dark trail is a shadow from the dust devil, not a track left behind by it's movement (which shows just how tall it is)
i might be looking at the image differently from you, but it appears to me that the light source is coming from the wrong direction for that to be a shadow. it looks like a track to me.

~james

edit:
maybe not, i see now what youre referring to. dont mind me.



Your reply here?

The Cellar Image of the Day is just a section of a larger web community: a bunch of interesting folks talking about everything. Add your two cents to IotD by joining the Cellar.