So I haven't been spending as much time on the computer this year as I used to. Somehow I seem to have lost my interest in it. But every now and again I sit down at the computer and I write... but today I sat down for a wee read. I decided to catch up on all the blogs that I have been following and I decided to check out APOD as well. APOD is an acronym for Astronomy Picture Of the Day. I love checking in with this site every so often because it has so much information about our universe and what's happening in it. Today I had a look and checked back over a bunch of pictures from the past few weeks when I wasn't checking regularly. This is what I found...
Explanation:
How much of planet Earth is made of water?
Very little, actually.
Although
oceans of water cover about 70 percent of Earth's surface, these oceans are
shallow compared to the Earth's radius.
The above illustration shows what would happen if all of
the water on or near the surface of the Earth were bunched up into a ball.
The radius of this ball would be only about 700 kilometers, less than half the radius of the
Earth's Moon, but slightly larger than Saturn's moon
Rhea which, like many moons in our outer Solar System, is mostly water ice.
How even this much
water came to be on
the Earth and whether any significant amount is
trapped far
beneath Earth's surface remain topics of research.
For me it was a bit of an eye opener...
I've always known how precious our water supply here on earth is but... wow we really need to keep in mind how quickly we can contaminate our water source so that everything that relies on water would be poisoned to death. I can't tell you how important it is for us to take that into consideration the next time we dump crap into our water supply. We may not have good potable water for long if we abuse the little (and I mean little) that we have.

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