probe into

Also found in: Idioms.
See: research
References in classic literature ?
He would have liked to probe into his soul so that he might see in its nakedness the dreadful dismay of the unknown which he suspected.
When installing any cochlear implant, a surgeon threads its electrode-studded probe into the cochlea's inward-spiraling interior.
The descent of the unmanned Galileo probe into Jupiter's unexpectedly dry and very windy atmosphere last year is sparking new and refined scientific theories about the giant planet.