Summa Theologica

Ia q. 68 : On The Work Of The Second Day (Four Articles)

[Letter] [A4] Entire question
[Letter] [A4] 1. Whether the firmament was made on the second day?
[Letter] [A4] 2. Whether there are waters above the firmament?
[Letter] [A4] 3. Whether the firmament divides waters from waters?
[Letter] [A4] 4. Whether there is only one heaven?