Bake chocolate cake in a 9 inch dome pan and let it cool completely.
While it's cooling, make frosting.
Once the cake has fully cooled down, slice it in half.
Fill it will frosting.
Then, ice the entire cake as smoothly as possible.
Roll out black fondant and spread it over the cake. Cut off excess along the sides with a knife or pizza cutter.
Roll out gray fondant and cut out a circle piece (about 3 inches) and add details to it with knife and some small circles and square pieces. Keep aside.
Use the back of a spoon or your fingers to gently dig into the top side of the cake and make an indentation.
Stick the circle piece here with some water.
Roll out gray fondant again but this time, cut out rectangle pieces.
Add details with a sharp knife and various sizes of circle decorating tips to create indentations.
Use a paintbrush and some water to stick them on the cake.
Steam the cake (with a steam iron) from a 1 foot distance and let it dry for about 10 minutes.
Use silver edible spray to create a metallic finish.
Roll out tiny balls of red and white fondant and randomly stick them on the cake for lights. Enjoy!