This is the other word for sky, and specifically refers to the night-time sky full of stars. It implies poetry and wonder.
Ä“ teteÃ± ien hÄ“ja Ã±anna jamÄonre nÄ«kan jakÅnÅr ja Ã±i jÅl rÄ anÄ«stÄ«li;
And they said to each other: We should make a city with a tower that reaches to the heavens.
la sahÄ“Ã±Ã±e jÄste Ã±e anÄ«stÄ«li;
His hair was as dark as night.