Phoenix's arm, meanwhile, encountered a hard surface while digging another trench Thursday and scientists were hopeful of uncovering an icy layer, the space agency said. That trench is called Snow White 2.
The arm went into a "holding position" after three attempts to dig further, which is expected when it the reaches a hard surface, NASA said.
Can I replace 'further' with 'deeper'? Thanks
Top answer
I suppose so, if the digging is approximately vertically into a horizontal surface (or horizontally into a vertical surface)
— Mister Micawber
I suppose so, if the digging is approximately vertically into a horizontal surface (or horizontally into a vertical surface)
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