Well, discovery is a different word from seen. You cant say you discover an island because you just seen it. When you discovered it, then you did not seen it, you step on it and name it. I think they just seen the island of antartica but did not fully discovered it. Just like the discovery of Phillipines, the Spaniards seen it before it is discovered by an slave, after that they find it again and name it as Las Filipinas, were Magellan named it after their Ruler. So in the books they say Magellan discovered it and the slave just seen it.
so you basically say when they drew the map in the 15 th century they already knew about antarctica and where it was and the size (most drawings are similliar to todays drawings of antarctica)
but they didnt discover it until 1773?
But doesnt it count as discovered if you know where and what it is and you can even map it out??

Im sure Neil Armstron and Buzz aldrin arent named the discoverers of the moon - if they actually were on it.
So the moon was a long time discovered before stepped on, so why is it that it says antarctica was discovered in 1773 when there are clearly maps showing antartcia in the 14 and 15th century.
Im sure they couldnt draw any maps before 1492 of the USA because it wasnt discovered noone knew about it
see the point im trying to make