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!


















