Or, maybe as the article states, there is way ...

Or, maybe as the article states, there is way more water entering the soil, that the ice is so thick that the probe will not work, as Mario has pointed out, and has been proven to be correct.

so the Liquid state is not seen, AT THE TIME OF the PROBE.

stick it in the ice. or in the gap between.

It could also go into Rocks, like in the desert. Then they bleed moisture all day.