Night time in Antarctica is the same as everywhere on earth. Some night times are sunlit and some day times are sunless.
Not very much basically it is daytime for half a year then nightime for the rest except at the equator daytime is longer and nightime is shorter but in winter nightime is longer and summer is shorter. so only during summer and 1 half of the year.
Because so much of Antarctica remains a mystery, this definition has not been determined.
Australia 'has' no part of Antarctica. The country claims part of the continent, as you can read in the link, below.
Nighttime.
Asia is about 45,000,000 km2 while Antarctica is about 14,000,000 km2, so Asia is much larger.
It already is affecting Antarctica, though not as much as in some other parts of the world. It is generally losing ice, though mostly on the coast whereas there may be slight gains in East Antarctica. It is also warming, again especially on the coast but no so much in East Antarctica.
So much warm clothing.
Umm, probably one dollar since there are no countries in Antarctica.
Antarctica
at nightime
No, their nocturnal.
Because so much of Antarctica remains a mystery, this definition has not been determined.