- Academia 7.2k 7.2k 11 gold badge2323 silver badges4040 bronze badges
- History 5k 5k 22 gold badges2222 silver badges2828 bronze badges
- Space Exploration 4.8k 4.8k 1919 silver badges2424 bronze badges
- Travel 2.9k 2.9k 1717 silver badges1818 bronze badges
- Aviation 1.1k 1.1k 77 silver badges1414 bronze badges
- View network profile
Top network posts
- 84 What risks are there acting as a broker between PayPal and electronic bank transfers?
- 75 How to list a paper in your CV when having 1000 co-authors?
- 55 How likely it is that a nobleman of the eighteenth century would give written instructions to his maids?
- 55 Why do they have a Snellen eye chart on the ISS?
- 46 How much were telegraphists in the 1950s paid?
- 45 What is this "bridge" over the Suez Canal?
- 41 How do we know what the atmospheric pressure on Mars is?
- View more network posts →