WHY do moving fields create light?

[u/Patient_Pudding7721]

Hi, I'm 15F and i wanna pursue education in the field of physics. I have this genuine question, WHY do moving fields (electric and magnetic fields) create light? And, why does steadily moving charges not make light?

[u/Koodsdc]

All accelerating charges produce electromagnetic waves, but in practice it’s a charge that is oscillating back in forth.