Have you seen this image before? (APOD of 2016 Sep 11)

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Have you seen this image before?

Poll ended at Fri Sep 16, 2016 7:58 pm

Yes, on APOD.
577
33%
Yes, elsewhere.
362
21%
No.
785
45%
Oops!
6
0%
 
Total votes: 1730

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RJN
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Have you seen this image before? (APOD of 2016 Sep 11)

Postby RJN » Fri Sep 09, 2016 7:58 pm

Today's illustration on APOD depicting the amount of water on Earth first appeared on APOD in 2012 and has appeared numerous times on other sites. Have you seen it before? We would be grateful if you would indicate yes or no in the above poll. Although only an informal poll, we are curious to better understand the effect of past exposure on the popularity of specific APODs. Comments are also welcome below. Thanks for any help you can be!

The image is again posted here for clarity:

waterlessearth_woodshole_960.jpg


- RJN for APOD
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bystander
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Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby bystander » Fri Sep 09, 2016 8:05 pm

Know the quiet place within your heart and touch the rainbow of possibility; be
alive to the gentle breeze of communication, and please stop being such a jerk.
— Garrison Keillor

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Chris Peterson
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Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Chris Peterson » Fri Sep 09, 2016 8:39 pm

Said I saw it elsewhere because the first time I saw it was before it was on APOD. But I've seen it both elsewhere and on APOD. I'm assuming the question refers to where it was first seen.
Chris

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Ann
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Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Ann » Sat Sep 10, 2016 5:32 am

I remember this picture very well, but I can't say if I first saw it on APOD or elsewhere.

Ann
Color Commentator

Guest

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Guest » Sun Sep 11, 2016 4:12 am

I saw it on APOD in a comparison with the water content of the Jovian moon Europa (which actually has more water than Earth!)

pbillock

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby pbillock » Sun Sep 11, 2016 4:22 am

I'm pretty sure I saw this same image at the Smithsonian Air & Space in DC. It was a fairly new exhibit, they probably got it from APOD... :)

Guest

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Guest » Sun Sep 11, 2016 4:39 am

It's gotta be more than that?!

Dave Bisset

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Dave Bisset » Sun Sep 11, 2016 4:44 am

I want to find out which is correct, if either. This latest image has text saying that the ball representing all water on earth is 700 K/ms in diameter while the 2012 image says it is 1,385 K/ms. This creates a large credibility gap and makes room for a lot of detractors of science to gain traction!
Please clarify.

Regards,

Dave Bisset,
Wanaka New Zealand.
davebisset@xtra.co.nz

Rohan

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Rohan » Sun Sep 11, 2016 5:00 am

It would seem that the 700 km quoted here is in error ? - its quoted previously elsewhere as ~860 MILES.

Which is ~1385 km, incidentally.

It doesn't seem like much water, expressed like that.
But its still a big enough sphere that the ISS would be well underwater if it encountered it like that !

Dave Bisset

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Dave Bisset » Sun Sep 11, 2016 5:16 am

Oops! I did not notice that one is quoted as diameter and the other is radius!

Sorry about that!

Regards,

Dave Bisset

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Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Boomer12k » Sun Sep 11, 2016 6:28 am

Well, it IS "repeat Sunday".... fine with me... gives me a reminder of an interesting concept....

:---[===] *

julienbroux

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby julienbroux » Sun Sep 11, 2016 7:36 am

I've seen this, or even a similar picture before, but can't remember where. Remember my surprise at the small dimensions of it.

hippy

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby hippy » Sun Sep 11, 2016 8:38 am

"Why are they showing this again?"... reads description, clicks link. First time on forums, hi, been loving the pictures since 2010 <3 Keep it up :D

justlittleme

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby justlittleme » Sun Sep 11, 2016 8:46 am

If I have seen it before,I forgot it. It is worth putting up every 5 years to remind us to conserve water!

Bob Parks

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Bob Parks » Sun Sep 11, 2016 11:01 am

I visit APOD every day, but I am 85 now. I voted that I had not seen this picture before, but I may have missed it during a trip to the hospital.
That happens more frequently the last several years.

Bob

sol2

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby sol2 » Sun Sep 11, 2016 11:26 am

:?: Is the ball of water getting smaller?
how big a ball of water is drinkable?

ernamor106

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby ernamor106 » Sun Sep 11, 2016 11:58 am

When I first saw it, I was absolutely floored! So little water compared to the size of Earth. I was in Newfoundland shortly afterward and I was looking eastward and I knew there were thousands of km between me and the UK with all that water, and, yet, there really is not all that much. My favourite image from APOD.

naturestan

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby naturestan » Sun Sep 11, 2016 12:05 pm

When I try to consider the immenseness of the seas that are called shallow in the text, the pictured water droplet seems disproportional to my minds eye.

nestor

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby nestor » Sun Sep 11, 2016 12:56 pm

I've seen this image before, and one more even most stricking, that with another ball, smaller ball, showing just drinking water (not salad). both are wonderful to comprehend why we must take care of any drop of water in the Earth.

apodreader

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby apodreader » Sun Sep 11, 2016 1:05 pm

FYI: More information and a better quality image is available at
http://water.usgs.gov/edu/gallery/globa ... olume.html

baruffa - Italy

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby baruffa - Italy » Sun Sep 11, 2016 2:16 pm

Yes, but I see it only a week ago, recherging images of amount of water on Earth and other objet of Solar Sistem.
http://img.gawkerassets.com/img/17nn952 ... iginal.jpg
I read only day APOD, but evidenly forget that images....

Pestest

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Pestest » Sun Sep 11, 2016 2:37 pm

I first saw it on APOD in 2012 (APOD has always been our home page) however right after (less than 3 weeks) saw it on a sight called "Earthweek" [http://www.earthweek.com/2012/ew120601/ew120601x.html]. The description captioned there was (extraordinarily) similar enough that at the time I thought "Hey, this paid entertainment company [© MMXII Earth Environment Service] has not only plagiarized APOD :shock: but is blatantly attempting to assert copyright over it" :x . Hadn't thought about that case for a while and I had to re-research the site but I see it's still there too. While I support the dissemination of information, I can't agree with that type of thievery.
PS Thanks for your awesome (and attributed) content!

Karen

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Karen » Sun Sep 11, 2016 2:46 pm

I remember this and also - evidently from other sources - a similar comparison of "air" volume. Like this: http://www.sciencephoto.com/media/159214/view though I do not remember the big copyright stamp on it.

Zeb

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby Zeb » Sun Sep 11, 2016 3:21 pm

Rohan wrote:It would seem that the 700 km quoted here is in error ? - its quoted previously elsewhere as ~860 MILES.

Which is ~1385 km, incidentally.

It doesn't seem like much water, expressed like that.
But its still a big enough sphere that the ISS would be well underwater if it encountered it like that !


They're talking about the radius. Looking at the picture, the radius of 700 km seems correct to me, as the diameter would be 1400 km, which would be the ~860 miles. I know this looks like 1400 km in diameter because I look at maps lots.

Cheers!

williamawelch@gmail.com

Re: Have you seen this image before? (APOD of 2016 Sep 11)

Postby williamawelch@gmail.com » Sun Sep 11, 2016 5:07 pm

But it is a great image and the message should be repeated.


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