Data on sea surface heights around the world from the international Surface Water and Ocean Topography mission yields a mesmerizing view of the planet’s ocean.
Iron-rich sediment colors the red-orange waters of the Betsiboka River Delta in Madagascar in this image taken by an astronaut on the International Space
The formation of the Earth may have looked more like a fast, inevitable landslide than like a slow series of occasional cataclysms, as scientists have long theorized, according to findings published Wednesday in Nature. If it did, Earth-like planets could be far more common than previously thought, the findings suggest. The paper represents a groundbreaking revision of the conventional understanding of how the Earth was created…