The subject of the sentence is "the death of the two stars", which is singular.
Therefore, the verb should also be singular.
The correct verb form is "was", not "were".
Their idea of holiday is to relax at a luxury resort.
چھٹی کے بارے میں ان کا خیال ایک عیش و آرام کی ریزورٹ میں آرام کرنا ہے۔
The phrase "Their idea of holiday" suggests a preference or definition, which is correctly followed by "is to relax" (infinitive form).
Eternal means something that exists forever, without a beginning or an end.
It is often used to describe concepts like time, soul, or divine beings in philosophy and religion.