Subject / Started by
Columbus & a Round (or Flat) Earth.

Started by Yaakov ben Avraham « 1 2 »

Sailing a Columbian ship to the edge.

Started by Yaakov ben Avraham « 1 2 »

Unipolar, bipolar, disc, square, infinite plane?

Started by Yaakov ben Avraham « 1 2 3 4 »

Ferdinand Magellan

Started by Yaakov ben Avraham

Gravity (2.0)

Started by yash.paz123 « 1 2 »

Gravity

Started by yisfat « 1 2 »

Maps

Started by Yoshi_