@overcode Hi! nice to meet you too! FMA will always hold a dear place in my heart, it's the one series that made me start watching anime consistently. I just happened to catch and episode on tv of the oldest series and I had to rush to buy the manga too.
I definitely recommend Planetes if you like hard scifi, the animation studio even consulted JAXA to make it look more realistic. I enjoyed both anime an manga, but they are quite different, sharing only the major characters and some plot points. The first starts off as a slice of life, but it then develops into a story centered around a terrorist plot. The manga insted retains its 'slice of life' feel until the end. It heavily focuses on personal issues, such as loneliness and regret. Personally I watched the anime first, but the manga is pretty short (only 4 volumes) if you want to check if you like the series.

@stormtoast yes! The older series, I have watched both but the new one doesn't compare to the older imo, though I don't know how to explain why ahahha (maybe because the first time of something leaves a special kind of impression?)... I just watched a trailer of planetes, animation looks great, so I am gonna start with the anime. I like what you mentioned about the focus on emotion and human nature, I am into that too, so here we go, more cool stuff to explore. Thanks for the recommendations!