Did you know that Thor was the Norse god of thunder, and that he produced thunder with his hammer, Mjolnir?
Earth and Space Science Concept of the Day
Do you know what this word or phrase means?
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.
Tiny variations in the isotopic composition of silver in meteorites and Earth rocks are helping scientists put together a timetable of how our planet was assembled, beginning 4.568 billion years ago. Results...Read more