NO SPOILERS
This is an easy achievement. I got it on my first try. Practice flying to make this easier.
Guide to From the Hearth to the Moon Achievement:
-Immediately head to Mica's Model Rocket in the village. Very shortly the Attlerock (moon) will be making a pass overhead from the left to the right.
-Right when it comes into view, take off and get some altitude. Head in the same direction as the moon and accelerate towards it until you crash into it. If you mess up, you might have time to reset the rocket and try again. If not, restart your session (it is faster than waiting on another orbit).
-Once you crash into it, the achievement will pop.
Congratulations on earning the From the Hearth to the Moon Achievement!