what is the terrain of neptune
Neptune is a gas giant, which means it is composed almost entirely of gasses. Neptune is composed of a helium, hydrogen and methane atmosphere. It has an exposed core of m â¦ olten rock and molten ammonia. Neptune is also very windy, with storm winds reaching up to around 2,000mph.he surface of Neptune is not solid because Neptune is a gas planet. The interior of the planet is extremely hot and winds blow in excess of 500 kilometers per hour.