Did you know that bodies in the solar system orbit the Sun in elliptical orbits?
Earth and Space Science Concept of the Day
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Spreading ridge
xSpreading ridge : An oceanic spreading ridge is the fracture zone along the ocean bottom where molten mantle material comes to the surface, thus creating new crust.
Marine scientists long believed that a microbe called Trichodesmium, a member of a group called the cyanobacteria, reigned over the ocean's nitrogen budget. New research results reported on-line today...Read more