EnlargeNASA/NOAA/GSFC/Suomi NPP/VIIRS/Norman Kuring
Water has made the Earth the planet that it is—a planet known for its blue oceans. Water shapes the land through erosion and is fundamental to Earth’s ability to support life. But we have a hard time understanding exactly how Earth ended up with all this water, as the building blocks that created it were likely to be dry, and the collisions that turned these building blocks into a planet should have driven any surface waters off into space.
Various means have been proposed to deliver water to Earth after its formation. But a new study takes
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