The China Ship
multimedia.scmp.com
multimedia.scmp.com
Thinking about things like on each of those voyages half the crew will die of Scurvy and other illnesses, for hundreds of years.
Now it is going to the moon or Venus, or Mars what requires a significant risk to do, because of danger like radiation or absence of civilization out there.
Some day in the future, traveling to Mars will be routine and people would barely think on those that made it possible.
How much people think about the incredible thing it is we could travel to the other side of the planet on a single day?
https://multimedia.scmp.com/culture/article/spanish-galleon/...
https://multimedia.scmp.com/culture/article/spanish-galleon/...
https://multimedia.scmp.com/culture/article/spanish-galleon/...
As for the "enemies," they were little more than pirates, brigands, and otherwise despondent vagrants looking for a bit of self-help justice (helping themselves to the spoils of thievery and robbery.)
England and Spain were not officially at war at the time.
Definitely worth a read if you find this sort of thing exciting.
edit - fixed some of my endless typos
Is that really true? 15k ships sounds absurdly high for that era.
If they had that many ships, it was likely inherited off Zheng He's expeditions and the 1400s Chinese period's brief uprise in naval interest (https://en.wikipedia.org/wiki/Zheng_He#Expeditions), the Vietnamese conquest or the Mongolian Yuan dynasty who might have used them as an naval invasion force or even other previous dynasties who were far more interested in commerce but all these events were more than 50 years before the 1500s. However, note at that period, China had went from years of prosperity in the early 1500s (https://en.wikipedia.org/wiki/Hongzhi_Emperor) to chaos in the mid to late-1500s and land wars were more important with Chinese fighting Mongols and Japanese (https://en.wikipedia.org/wiki/Wanli_Emperor).
[0] https://en.wikipedia.org/wiki/Battle_of_Actium#Order_of_batt...
[0] https://www.independent.co.uk/news/world/americas/500-years-...
[1] https://www.jstor.org/stable/43383349
[2] https://www.thoughtco.com/why-did-the-treasure-fleet-stop-19...
Literally like 30% of the world's population in one empire.
Just to keep scale in perspective.
https://en.wikipedia.org/wiki/Ming_treasure_voyages?wprov=sf...
Why the West Rules---For Now by Ian Morris discusses the expeditions at length. They weren't exploring, they were cementing relations with existing direct and indirect trading partners. That's the reason for the large crews.
That's of course terrifying, but also quite puzzling: why weren't the papers checked at the point of departure?
I think the biggest risks are loss of breathable air and claustrophobia/prolonged isolation (if people freak out in ships, imagine in deep space).
But anyway, if we have pirates, there is a space ecosystem large enough to leech off, so a win!
However, every year you stay on Earth, you're kinda like throwing a 1d100 whether you get a WWIII and it turns into a nuclear wasteland or not. You can keep throwing it and hope it doesn't happen in your generation, or, you can get out of it and have a backup plan.
I think the first first experiments won't have any problem finding volunteers because we've been so acculturated to think of space travel as being "cool," but presumably after the first few extraterrestrial colonies dramatically cease to exist after explosive decompression accidents or are simultaneously poisoned by bizarrely-mutated e.coli variants in their water supplies, people will be much less eager to move off the nice, familiar, safe-seeming Earth.
As Xi continues to lock down China and exert more and more control, it will be interesting to see if China's central economic strategies and dynamic startup industry will continue to flourish or if they will be crushed under the weight of totalitarianism.