Today is a good day to be down by the seaside.

Why?

Because it's Neptunalia! The festival of the Roman god Neptune.

Neptune is the god of waters and horses. He is the Roman equivalent of the Greek god Poseidon, a name you might remember form such movies as Poseidon and The Poseidon Adventure, neither of which had anything to do with the mythology.

In Ancient Rome, Neptunalia was a two day festival celebrating our favourite sea god. The people would sit in shelters made of tree branches and get merry on water and wine.

Neptune is also a planet in our every own solar system. Since the death of Pluto (who was the god of death), Neptune has inherited the title of being the last planet in the system. He is a whopping 17 times the mass Earth. That makes him the third largest (going by mass) in the solar system.

Not quite solid and not quite a gas giant, Neptune and his bro Uranus get called ice giants. The name fits quite well considering that Neptune is blue to the naked eye, like really thick ice.