I think it's the uncertainty areas. One it's 100km height and the other for 0m. It can be seen better on these links [0] [1]. I think it's done this way to show

I think it's the uncertainty areas. One it's 100km height and the other for 0m. It can be seen better on these links [0] [1]. I think it's done this way to show the trajectory. 0: https://x.com/esa/status/1831307613205615044 1: https://x.com/esa/status/1831337534950924348