The Son of Neptune The Son of Neptune The Son of Neptune is a 2011 fantasy-adventure novel written by American author Rick Riordan, based on Greek and Roman mythology. It is the second book in "The Heroes of Olympus" series, preceded by "The Lost Hero" and followed by "The Mark of Athena". The story follows the adventures of amnesiac Percy Jackson, a demigod son of Poseidon, as he meets a camp of Roman demigods and goes to Alaska with his new friends Hazel Levesque and Frank Zhang to free the Greek god of death, Thanatos and help save the world from Gaea, the earth
Neptune to have caused it. Five new irregular moons discovered between 2002 and 2003 were announced in 2004. A new moon and the smallest yet, Neptune XIV, was found in 2013. Because Neptune was the Roman god of the sea, Neptune's moons have been named after lesser sea gods. Neptune has a planetary ring system, though one much less substantial than that of Saturn. The rings may consist of ice particles coated with silicates or carbon-based material, which most likely gives them a reddish hue. The three main rings are the narrow Adams Ring, 63,000 km from the centre of Neptune,