Another name for the interstellar matter that will eventually form a star is

Another name for the interstellar matter that will eventually form a star is a protostar or nebula. It is defined as a cloud of gas and dust in outer space, visible in the night sky either as an indistinct bright patch or as a dark silhouette against other luminous matter. It is an interstellar cloud of dust, hydrogen, helium and other ionized gases. 

The purpose of a lab is to do your "expirements" the importance of the topic is so you can now what the story is about and the last one is because no one is me with my question ( what is 3 over 4 x - 9 = 27 maybe you can )