They'd die...
If the Sun's temperature were much colder and it were much smaller Earth would no longer support human life
photosynthesis would stop,temperature will drop to zero,ocean surfaces would freeze,extinction human etc
The temperature on Earth will become so hot that no living animal, human or plant could survive.
The sun would win.
It would melt.
You would be vaporised long before you actually reached the sun.
death
It cannot happen, but if it did we would all die shortly therafter.
you will die
we would die
photosynthesis would stop,temperature will drop to zero,ocean surfaces would freeze,extinction human etc
Solar is Sun so without the Sun there is no solar.