Question about what eye piece can see planets
i am a teen who’s been getting into astronomy a lot recently, I have 2 telescopes, a celestron NexStar 102 SLT and a celestron power seeker 127eq. I’ve had my nexstar for longer but only had an eye piece to see the moon. I was convinced the powerseeker would be able to see Saturn, my favorite planet, but I got it from a garage sale so it only had one eye piece and is really confusing. I’m also learning that my NexStar is probably a better telescope. So my question is, what eye piece do I need to get for the NexStar to see planets like mars, Jupiter, Saturn. the eyepiece on the left I got with the power seeker and can’t see anything out of either telescope with it and the one on the right can only see close ups of the moon. I’ve tried looking at Venus with it but all i ended up seeing was what looked like looking through a microscope and seeing a bunch of microscopic life and stuff.