Don’t they have editors any more?
They could say sub-surface and would be correct,
underground not so much.
Oh well...
Poor wording does as much damage to good science as global warming alarmists do.
One that irritates me lately is the statement that the Dawn spacecraft is “orbiting” Ceres. Its not orbiting. Its currently traveling parallel with Ceres some 38,000 miles beyond the orbit of Ceres and will enter actual orbit early next month.
(NASA eyes on the solar system is a great tool for visualizing where these craft are and where they are headed.)