How do you imagine the big nothing before the first star appear?

Question

or before the universe was born

Answer 1

I guess there was nothing... absolutely nothing

Answer 2

Less than nothing because even the nothing of space is something but there wouldn't even be that. I like the Brane Theory which states that there were two dimensional planes that collided and the universe we know and love is formed. As of now our universe keeps the two planes from colliding again, but once the universe spreads out into nothing but photons there will no longer be sufficient density in the universe to hold the planes apart. Once they collide again a new universe will be formed... and so on. So if this theory is to be believed than before our iteration of the universe was another universe spread out to nothing.

Answer 3

I see just blackness.

Cover your eyes and your ears and the sense of nothingness fills you, and that's probably the best you can ever imagine the big nothing before the universe was created.

Answer 4

A few scientist believe it  was microscopic and the whole universe grew exponentially until the great big bang.