You may be thinking of the size of the ice sheet that covers 98% of the Antarctic continent. It joins the Southern Ocean sea ice, essentially doubling the size of the continent -- from 14 million square miles to about 28 million square miles.
The size of the Antarctic continent just about doubles during winter, because the sea ice around it freezes.
Foodstuffs are shipped to Antarctica during the summer months, for storage and use during the winter.
Antarctica is a continent and does not expand during any season. However, the ice sheet that covers 98% of the continent, during winter, merges with the frozen sea ice of the Southern Ocean, and thus, essentially doubles the size of the ice sheet.
Essentially the size of Antarctica -- about as large as USA and Mexico combined -- doubles during the winter when the sea ice freezes and joins with the ice sheet that covers 98% of the continent.
You would travel to Antarctica during the austral summer. During the austral winter, the sea ice freezes and essentially doubles the size of the continent, so you couldn't touch land. As well, it's cold enough during the winter to freeze hydraulics and turn jet fuel to sludge.
Cold
No penguin breeds during any winter anywhere where penguins breed.
The tourists go to Antarctica during the summer or the winter
The emperor penguin is the only penguin that breeds during the winter in Antarctica.
The continent of Antarctica doubles in size, in winter when the sea ice surrounding it freezes.
During the winter months when there is no sunrise.
Antarctica