- History 16k 16k 1313 gold badges5858 silver badges131131 bronze badges
- Aviation 16k 16k 77 gold badges7272 silver badges176176 bronze badges
- Space Exploration 4k 4k 2020 silver badges4848 bronze badges
- Earth Science 2k 2k 33 gold badges1313 silver badges2323 bronze badges
- Astronomy 1.6k 1.6k 77 silver badges2020 bronze badges
- View network profile
Top network posts
- 114 Did China ever consider a phonetic writing system?
- 111 On 1941 Dec 7, could Japan have targeted the Panama Canal instead of Pearl Harbor in a surprise attack?
- 90 Why didn't Germany blockade the Strait of Gibraltar during WW2?
- 80 Why is the heart not in the middle of the body?
- 74 Are there any saltwater rivers on Earth?
- 62 Why are so many metros underground? Isn't that more expensive than an elevated system?
- 59 Why did Columbus cross the mid-Atlantic instead of exploring from Greenland?
- View more network posts →
Top tags (0)
This user has not participated in any tags.