The lord of the sky was Zeus. He fathered deities like:AthenaApolloArtemisHephaestus
Many, they were sea deities, sky deities, earth deities, underworld deities - and even some in-between.
Hera was the goddess of all marriage's and the sky of the starry heavens.
Shu and Nut are both sky deities.
He was god of the sky, he was the symbol of it and one of it's many deities.
Of all the deities Zeus is the boss.
The ancient cultures that worshiped space include the Sumerians, who believed in a pantheon of sky gods such as Anu, the god of the sky; the Egyptians, who had deities like Nut, the goddess of the sky; and the Aztecs, who revered deities associated with the sun, moon, and stars like Tonatiuh and Metztli. These cultures often saw the sky and celestial bodies as powerful forces influencing their lives and destinies.
there is only one planet not named after roman deities: Earth
Jupiter's Greek equivalent was Zeus, the king of the gods in Greek mythology. Both were powerful deities associated with thunder and the sky.
The purpose of Greek mythology, as with all myths and religions was used by the ancients to explain the world around them. The sun rose everyday because Helios drove his sun-chariot into the sky. The seasons changed because Persephone went into the underworld for several months. The evils of the world existed after Pandora opened the legendary box. etc. If you are looking for a list of the deities and what they did, look under related questions for "Who are all of the Greek deities and what they are in charge of?"
The Titans were for the most part born of the Greek primordial gods Ouranus (the sky) and Gaia (the earth) deities.
All gods are deities.