DailyUI #001

Going to try and do some DailyUI challenges. These probably won't be daily, but I'll try my best. I also want to define use cases for the ones that I do end up doing, in order to get better feedback.
SpaceConnect is a mobile app geared towards children between is the ages of 8-13 who want to explore space and learn more about the universe.
I used a dark background and cute icons to attract attention to the earth. I also assumed that children would not have social media, so no social signups are present (please correct me if you think I am wrong). I also tried to use better copy by saying 'start exploring', to add value for the user.
Overall, I would love some feedback on this design and thought process :)