Psamathe
Guru
Very much depending on your self-assessment of your Lightroom capabilities (ie what stage you are really at), some people starting find using the LrC "Auto" option (in "Develop") and look at what adjustments it makes (mainly Highlights, Shadows, Whites & Blacks but it often will add Vibrance). People look at what adjustments "Auto" makes, undo it and play around themselves, try auto again, undo, etc.as my skills in Lightroom still need a lot of work.
Works best of more traditional scenic/portrait photos so no idea how it would cope with Milky Way photos.
If using Lr CC (mobile) rather than Classic I don't know; I'd expect it has the same "Auto" as it has the same adjustments but no idea where, etc. (I only use LrC after the disastrous Lt syncing release some time back ...).