Thursday, June 23, 2011

What Am I ? (#9)



1.  My surface includes several interesting landmarks such as Rachmaninoff, a 170-mile-wide, double-ringed impact basin and the Debussy crater, site of a billion-year-old major collision (one of my most recent!)

2.  My iron-rich core extends three-quarters of the way to the surface and makes up 60% of my mass. 

3.  Although my daytime temperatures exceed 800 degrees Farenheit, radar studies indicate that I have vast deposits of ice within the perpetually dark, frigid craters at my poles.

4.  On March 17, NASA's Messenger spacecraft completed a seven-year journey and settled into orbit around me.  Over the next year Messenger will capture 75,000 images of me, helping scientists understand my many intriguing quirks.

Have you figured out what I am from my clues?  *  Scroll down for the answer.




























I'm the planet Mercury!



* Facts provided by the June 2011 issue of Discover Magazine.

7 comments:

Pam said...

I guessed it! Took me a moment, but I got it before I looked!

Felicity Grace Terry said...

Way off the mark ..... I don't know why but for some reason or other I was thinking of a volcanic crater.

Anonymous said...

I guessed Venus - I prefer her to the winged messenger - I can't think why....
I'm surprised that there's ice on Mercury. Thanks for teaching me something.

Anonymous said...

Have a good weekend

Kelly said...

Boonie, Tracy - Glad I was able to stump you! (and teach you something in the process) I did try to make it a bit tougher since I knew if I just said "closest planet to the sun" it would be obvious.

Pamel - Way to go! :)

Jenners said...

I knew it was a planet .... but I guess Mars.

Betty Manousos said...

i guessed it was a planet, but couldn't guess exactly which one of them.
great planet Mercury lesson!

big hugs!
betty xx