Oortwolk

Compound of Oort (“Oort”) + wolk (“cloud”).


asteroïedgordel

head

asteroïedgordel (plural asteroïedgordele, diminutive asteroïedgordeltjie)

asteroïedgordele (plural)
asteroïedgordeltjie (diminutive)

Compound of asteroïed (“asteroid”) + gordel (“belt”).


Sonnestelsel

From Dutch zonnestelsel. Compound of son (“sun”) + -e- + stelsel (“system”).


sterrestelsel

From sterre (“stars”) + stelsel (“system”).