To add to Isabella's comments you also need to use either 'in' or 'at' with the verb 'arrive'. I think there is only one Aquarius constellation, so you need 'the' not 'an'. Can 'interest perk up excessively'? If you mean the person became overexcited, then I guess it might be possible to say this, but it seems a little strange to phrase it in this way.

#1: Look, a new star appeared within THE constellation OF Aquarius. Just not "AN Aquarius". The "Aquarius constellation" isn't wrong or anything, but it just sounds slightly less natural to me, but a native speaker might also choose to write it that way anyway. It's hard to explain why. I'll skip #2, since Isabella covered that. #3. Maybe I'm wrong, but to me, "moved by" doesn't fit with "his poisonous remarks and harsh criticism". I'd use it in a way that meant you felt some kind of deep sympathy, compassion, or perhaps even simply felt convinced of somebody's sincerity. Some alternatives could be "hurt by" or "bothered by". I'm sure there are lots more.

Thank you very much!

Your English is great! I have a few very small edits to number 2 that may help your sentence sound more natural. 2. Having arrived to the small town, (insert comma) my interest in that unusual placed perked up excessively. I wanted to immediately explore every street to listen to the latest news and taste the local food.