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A U.S.-French satellite has been launched with a
to map all the world's oceans, lakes,
, rivers and other waterways. The satellite has been dubbed SWOT - Surface Water and Ocean Topography. It went into space just before
on Friday. Scientists hope
from the satellite will help them to monitor how climate change is
changing water levels. The U.S.
PBS said: "The satellite is needed more than ever, as climate change worsens
, flooding and coastal erosion." A NASA spokesperson spoke of the mission's
. She said: "It's a
moment....We're going to see Earth's water like we've never seen it
."