NASA Mission Helps Solve a Mystery: Why Are Some Asteroid Surfaces Rocky?

NASA Mission Helps Solve a Mystery: Why Are Some Asteroid Surfaces Rocky?

A raindrop falling in Erie Co. PA will travel 2,147 miles to the Gulf of Mexico rather than 15 miles to Lake Erie

A raindrop falling in Erie Co. PA will travel 2,147 miles to the Gulf of Mexico rather than 15 miles to Lake Erie