from where and how to download the kernels? please help.
see also GitHub - USGS-Astrogeology/ISIS3: Integrated Software for Imagers and Spectrometers v3. ISIS3 is a digital image processing software package to manipulate imagery collected by current and past NASA and International planetary missions.
I am specifically referring to SPICE kernels, sorry for not mentioning this before.
Dear @Bhavyaa_Jain. I moved your latest reply to the ~proper category.
Please feel free to describe further your problem. It was somewhat understood that kernels were indeed SPICE, but from both initial and current messages it is not clear: which spacecraft / experiment / etc. ?
I also changed the topic. It would be easier for others to help/direct to resources to have both title/topic of the post and question a bit more specific/detailed (e.g. “location of Spice kernels for XXX”).