But it's true: With cameras and sensors, spacecraft have mapped lunar landscape features over the decades. Meanwhile, charting the ocean floor has presented its own daunting challenges.

A NASA and CNES satellite lets scientists see the ocean floor in new ways. A NASA and CNES satellite lets scientists see the ocean floor in new ways. Justine Calma is a senior science reporter ...

700 metres below the surface of the Atlantic Ocean was a hydrothermal field, often described as a geological area where hot ...

The ocean floor is a vast scope on our planet that remains largely unexplored. Although oceans cover 71% of Earth, we have clearer pictures of the Moon and Mars than we do of the landscape beneath ...

Only a tiny percentage of the ocean floor has been carefully mapped, which means we know less about 71 percent of the Earth’s landscape than about the far side of the Moon. That’s a lot of ...

Nearly three-fourths of Earth is covered by oceans, making the planet look like a pale blue dot from space. But Japanese ...

We've mapped the Moon more thoroughly than our own ocean floor, but a leap forward has come with NASA's SWOT satellite. Using tiny changes in sea surface height to reveal underwater features, ...