The ion tail appeared as Comet C/2025 R3 PanSTARRS was about 45 million miles from Earth (72 million kilometers) during its closest approach.

Watch comet PANSTARRS 'switch on' its second tail as it makes closest approach to Earth

Source: space
Source Link: https://www.space.com/stargazing/watch-comet-panstarrs-switch-on-its-second-tail-as-it-makes-closest-approach-to-earth