[CharlesWayneCT]

Maybe I took “physics” to be too strictly defined, since you mentioned “physics” and “astronomy” I thought you were talking specifics, like there was something special about those two. Geology was a different class for me than physics, and nothing I learned in any of my physics courses dealt with fossils, geology, or radioactive decay.

Physics was about observed measurements. Gravity, momentum, inertia, light waves/particles, stuff like that. I don’t remember a single time in all my my physics courses EVER thinking about evolution or “old earth”, and I was keenly aware whenever those topics came up.

[PapaBear3625]

What I was referring to was (1) the direct observation that the universe is much older than 6,000 years, and (2) radioisotope dating of rocks and such demonstrating an age older than 6,000 years.

[aNYCguy]

nothing I learned in any of my physics courses dealt with fossils, geology, or radioactive decay.

You clearly didn't take much physics. Even third semester physics for non-majors covers radioactive decay. And the related physics don't look good for a young Earth.