Aquila, the Eagle, is a very old constellation. The brightest star, Altair, was known as the Eagle Star thousands of years ago. Much later Greeks thought that this eagle constellation represented the pet eagle of Zeus (who was king of the Greek gods).
Aquarius, the Water Bearer, is located in an area of sky that is sometimes known as the Sea. All the constellations in this celestial sea are associated with water. They include Capricorn (Sea Goat), Cetus ( Sea Monster), Delphinus (Dolphin), Eridanus (River), Hydra (Sea Serpent), Pisces (Fishes), and Piscis Austrinus (Southern Fish). Aquarius was thought to have control over the celestial sea.
Aquarius is associated with one of the oldest stories ever known, the world-wide flood. A Euphratean story (from the area now called Iraq) told how the god Ea saved Pirnapishtim, his family, and the seed of every living thing from the flood. After the flood Pirnapishtim rebuilt the world.
In Greek mythology Aquarius represents a king called Deucalion. He and his wife Pyrrha built a boat and survived a flood which had covered almost the whole world. The only other living human was a wise person who lived on top of a high mountain. The wise person told Deucalion that to restore the human race he should throw the bones of his mother behind him. Deucalion finally figured out that 'mother' meant mother-earth and that the 'bones' really meant stones. The stones Deucalion threw became men and the stones that Pyrrha threw became women.
Aries, the Ram, is a small and very old constellation. There are many stories about the Ram (a male sheep, often shown with horns), here is one of them.
A long time ago, in a part of Greece called Thessaly, there lived a king called Athamas and a queen called Nephele. They had two children, a girl named Helle and a boy named Phryxus. Unfortunately the King and Queen separated and King Athamas remarried to a woman named Ino. Ino was a cruel stepmother and she wanted to get rid of Helle and Phryxus. When Nephele found out that her children were in danger she asked the god Hermes for help. Hermes gave Nephele a ram with fleece of gold. The ram's name was Chrysomallus and it could fly through the air! Nephele put her two children on the ram's back and Chrysomallus flew eastward. While they were flying over the strait (a body of water) that separated Europe from Asia Helle lost her grip and fell into the water. In her honor the strait was named Hellespont (but today it is usually called the Dardanelles). There was nothing that Phryxus could do to save Helle and so he kept on flying. Finally he reached a land called Colchis, on the eastern shore of the Black Sea. He gave thanks to the gods for his safe arrival by offering up the ram as a sacrifice. He gave the golden fleece to King Aeetes of Colchis and they became good friends. King Aeetes hung the golden fleece on a sacred oak tree where it was guarded by a dragon. That golden fleece was to become the subject of the famous story called Jason and the Golden Fleece.