There was no specific god of space, as the Greeks did not have the same concept of space that we have in modern times.
Some Greek gods that may have related to space were:
Khaos (or Chaos) was the first Greek God in the Greek God and Goddess Family Tree. He was the first to emerge out of creation. He is infinite space or a void.
He is Greek god, but he does have a roman version Jupiter
the greek god hermes the god of messages
There is no Greek god mercury, he was a roman god, and he was the god of war and weapons.
The Greek god of sleep was Hypnos.
It symbolizes that the Apollo program, being named for the Greek god of light, is shedding light in the dark of space.
Khaos (or Chaos) was the first Greek God in the Greek God and Goddess Family Tree. He was the first to emerge out of creation. He is infinite space or a void.
It was given the name Apollo , after the Greek god Apollo.
The Greeks god of the sun was Apollo and that was the name given to the US space program that landed men on the moon.
He is Greek god, but he does have a roman version Jupiter
There is no Greek god "Sades": there is a Greek god Hades.
The god Poseidon was the Greek god of the ocean.
the greek god hermes the god of messages
Poseidan the Greek god was related to Hades the Greek god!
He is a Greek God.
He is the Greek god of the sun.
Hippocrates was not a Greek god, but a Greek physician.