Where does “asman” come from?

asman (Turkmen) comes from Persian آسمان, from Old Persian 𐎠𐎿𐎶𐎴, from Proto-Iranian Hácmā, from Proto-Indo-Iranian Háćmā, from Proto-Indo-European h₂éḱmō, from Proto-Indo-European h₂eḱ- — sharp.

asman (Turkmen): sky, heaven

Definitions

sky, heaven

Ancestry of “asman”, step by step

Step	Language	Word	Meaning
1	Persian	آسمان	sky; heaven
2	Old Persian	𐎠𐎿𐎶𐎴	sky
3	Proto-Iranian	Hácmā	sky, heaven
4	Proto-Indo-Iranian	Háćmā	stone; thunderbolt, sky?
5	Proto-Indo-European	h₂éḱmō	stone
6	Proto-Indo-European	h₂eḱ-	sharp

Every word from Proto-Indo-European h₂eḱ- →Every word from Proto-Indo-European h₂éḱmō →Every word from Proto-Indo-Iranian Háćmā →