Unlike its northern counterpart, the Arctic Circle, which encompasses parts of eight countries, the Antarctic Circle crosses almost no permanent human settlements. It largely encircles the continent of , an icy landmass covered by a massive ice sheet that holds about 70% of the world's fresh water. The region is characterized by extreme conditions: Antarctica - National Geographic Education
The primary significance of the Antarctic Circle is astronomical. It marks the northernmost latitude in the Southern Hemisphere where the sun can stay above the horizon for a full 24 hours—a phenomenon known as the . Conversely, during the winter solstice, it is the northernmost point where the sun does not rise at all, resulting in Polar Night . antarctic circle
The sun remains visible at midnight.
The Antarctic Circle: Earth’s Southernmost Frontier The is one of the five major circles of latitude that mark maps of our planet. Located at approximately 66°33′39″ South , it serves as the invisible boundary to one of the most extreme and mysterious environments on Earth. An Astronomical Boundary Unlike its northern counterpart, the Arctic Circle, which
The sun remains below the horizon at noon. Geography and Climate It marks the northernmost latitude in the Southern