Did you know that most of the matter in the universe is in the plasma state?
Do you know what measurement Eratosthenes is famous for?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
Plate tectonics
xPlate tectonics : The theory supported by a wide range of evidence that considers the Earth's crust and upper mantle to be composed of several large, thin, relatively rigid plates that move relative to one another.
Geologists have learned that a magnitude-8.1 earthquake and tsunami that killed 192 people on September 29, 2009 in Samoa, American Samoa and Tonga was in fact a triple-whammy. The 8.1 "great earthquake"...Read more