Galaxy

Very little.

_{cold...so....very.....cold...}

We die.

Actually, we wouldn't just die immediately. If the solar system as we know it where to cease existing, that is the sun and other planets were removed and the Earth left behind, then we would die, probably by freezing, because the sun would not be there to supply the heat for the hydrological cycle. No hydrological cycle, no clouds, no rain, no food. No clouds means that nothing could keep heat from radiating out into space, so we would eventually freeze. If we were to survive that, then we would face certain starvation.

If the Earth formed as a planet without a solar system, then life would not have even started.

We won't exist.

how would we now we would be dead!!!!