Golden Eggsteroid #10 is located on level 7-11 of Angry Birds Space Cosmic Crystals. The Golden Eggsteroid is on the far side of the crane in the northeast corner of the level. While obtainable using Red birds, the Lazer bird is likely easiest. Sling him counterclockwise around the planet, then redirect down onto the Eggsteroid. Once you hit the egg you’ll immediately be transported via a wormhole to the level, which pays homage to the classic arcade game of pinball. The general strategy here is mostly luck, though there is a degree of strategy in where you aim the bird at launch. The further east you aim, the farther the bird will travel on its initial launch through the game… at least until you start hitting the wall. Use as few birds as possible to earn 3 stars.
If you need help, the video below shows the location of the Golden Eggsteroid a strategy for passing the level with 3 stars.