"आसमान में तारे हैं ।"

Translation: There are stars in the sky.

[GirishWar]

I think this can also be translated as "There are stars in the sky".

[ApurvaNoor]

I can say Aakash instead of Aasman, right?

[mriizo]

Yes, they are synonyms.

[VishakhaS]

Yes you can

[prvashisht]

"Stars are in the sky" would more like तारे आसमान में हैं

[Olivier216505]

What's the difference between सितारा and तारा?

[Natsu111]

None. They are synonyms. The only difference is that सितारा is a loanword from Persian and तारा is a native word from Sanskrit.