Where does “galaksijoukko” come from?

galaksijoukko (Finnish) comes from Finnish galaksi, from Swedish galax, from Ancient Greek γαλαξίας, from Ancient Greek γάλα, from Proto-Indo-European glakt-.

galaksijoukko (Finnish): galaxy cluster

Definitions

galaxy cluster

Ancestry of “galaksijoukko”, step by step

galaksijoukko traces back through two separate lines of ancestry.

via Finnish galaksi

Step	Language	Word	Meaning
1	Finnish	galaksi	galaxy
2	Swedish	galax	galaxy; a large collection of stars
3	Ancient Greek	γαλαξίας	the Milky Way galaxy; tailor's chalk; dogfish
4	Ancient Greek	γάλα	milk; milky sap; the Milky Way galaxy
5	Proto-Indo-European	glakt-	—

via Finnish joukko

Step	Language	Word	Meaning
1	Finnish	joukko	group, cluster, band; crowd of people number of things or persons, especially a rather large and unorganized one
2	Proto-Finnic	joukko	group
3	Proto-Germanic	jaukiją	draught animal; team of oxen
4	Proto-Indo-European	yewg-	to join, to yoke, to tie together

Every word from Proto-Indo-European glakt- →Every word from Ancient Greek γάλα →Every word from Ancient Greek γαλαξίας →