You are presented with the quiz "Electrons separating from what in certain bright astronomical objects forms plasma?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "plasma is formed by electrons separating from atoms in stars" and "color can be seen in some bright astronomical objects, such as stars, and bright planetary nebulae". 

So, what's the best answer to the question?


 

    atoms       