Study reports melting curve of superionic ammonia under icy planetary interior conditions

Icy planets, such as Uranus (U) and Neptune (N), are found in both our solar system and other solar systems across the universe. Nonetheless, these planets, characterized by a thick atmosphere and a mantle made of volatile materials (e.g., hydrogen water, ammonia, etc.), are the least explored class of planets; thus so far little is known about their origin, interior structure and composition.