paraBellumSacrum/Scripts/MainMenu.cs

using Godot;
using System;

public class MainMenu : Node2D
{
	public override void _Ready()
	{
		var StartButton = GetNode<Button>("Start");
	}
	private void _on_Start_pressed()
	{
		GetTree().ChangeScene("res://Scenes/Earth.tscn");
	}
}