Wednesday, April 23, 2008

Earth Day, Every Day

              

Wasn't it a lovely Earth Day ?  You're looking at a picture of what a total solar eclipse looks like from space.  The shadow of the moon covers part of the Earth, this planet, your home, our home and the only one we have.

                 

I thought you might like to read a few interesting facts about this wondrous spaceship:

1.  Rocks can float.  A "frothy" rock called pumice is loaded with gas bubbles.  Some of it can float.

2.  Can rocks grow?  Yes, of course!  They're alive.  Rock crust grows on moutains beneath the sea, about 1 millimeter every million years.  Same rate your fingernails grow every two weeks.

3.  How much space dust falls to earth?   Roughly 1,000 tons of space dust enters our atmosphere each year, making its way to the surface.  Microbes also rain down from space, and one group of scientists claims that extraterrestrial organisms may play a part in flu epidemics.  No proof of this, though.

4.  Is the Earth a sphere?  No!  The earth rotates and bulges at its midsection, giving it a kind of pumpkin shape rather than spherical.  This bulge was lessening for centuries but now, suddenly, it is growing. The cause is the accelerated melting of earth's glaciers which adds equatorial girth.

5.  How far can dust travel in the wind?  Dust from China has actually made its way to North America.  African dust is found in Florida, kicked up by high winds and carried as high as 20,000 feet.

6.  What makes thunder?  Lightening!  The air around a lightening bolt is superheated five times greater than the Sun.  This sudden heating causes air to expand faster than the speed of sound, which compresses and forms a shock wave.  We hear it as thunder.

7.  What two American cities are destined to merge?  The San Andreas Fault is slipping about 2 inches a year, which is causing Los Angeles to move toward San Francisco.  It should take about 15 billion years.

        

As seen from the space shuttle, the aurora borealis.....

         

 

    

14 comments:

sybilsybil45 said...

Thats some interestimng info. Thank you.  I hadn't thought of pumice as an actual rock...I use one to rub the hard skin off my heels when I have a shower !!  Love  Sybil xx

wwfbison said...

Very interesting facts, I love the picture of the borealis.  I am happy people are starting to "go green" and realize just how important it is that we protect our earth and ALL that live on it.
xx
Lisa

princesssaurora said...

Great facts, and picture - here and above!!!

be well,
Dawn
http://journals.aol.com/princesssaurora/CarpeDiem/

valphish said...

cool facts!!  Go to care2.com and SAVE THE EARTH and its inhabitants!!  Love, Val xox
http://journals.aol.com/valphish/ThereisaSeason

coelha said...

I learned a lot from this entry!  :)  You are a wealth of information!  :)  Julie

lanurseprn said...

This was VERY interesting!! Thank you Cathy!
Pam

pamal3 said...

Wow! What a fabulous entry my star lady. So full of great stuff. Brilliant pics too. Love Pam xx

ma24179 said...

I really enjoyed this, great facts!! (((HUGS))) -Missy http://journals.aol.com/ma24179/MISSYZSTUFF

shrbrisc said...

great facts girl
hugs
Sherry

pharmolo said...

Only problem with the merging of LA and SF is that in 15 bn years, there won't be an Earth or a Sun....

gehi6 said...

I do love that photo of the aurora borealis. I have always wanted to see the northern lights.  Now it is getting a little late for that!  So I will settle for some good photos and maybe a video or two!  Thanks for this treat.  Gerry
http://journals.aol.com/gehi6/daughters-of-the-shadow-men/  

helmswondermom said...

I love the photos, and thanks for all the great information.  Hope you had a great Earth Day yesterday.
Lori

jmorancoyle said...

    Interesting facts. I enjoyed seeing that first photo. I would have never thought that an eclipse would leave a shadow like that, although it does make sense.
Jude
http://journals.aol.com/jmorancoyle/MyWay

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