The Parker Solar Probe will make its closest approach yet to the Sun

Imagine the Sun as a ball 1 mile in diameter. If you flew a probe by the Sun that never got closer than 4 miles away (4 diameters) would you describe it as "into the Sun?"

Neither would I.

Sure, it's close enough to get very hot. But it's not into the sun.

I would argue that is also most “into the sun” we can reasonably get.

I think NASA is saying it's already gone well inside the Alfvén surface and so that qualifies as basically "into the suns atmosphere."

[1] https://en.wikipedia.org/wiki/Alfvén_surface