If you're a fan of sci-fi, you have probably wondered how close humanity is to establishing colonies on other planets. Such a question poses two large problems that need to be solved before such a thing could happen. The first is how to get there. The second is how to survive there. I'm not an aerospace engineer, so I don't know the answer to the first one, but I do have an idea as to how to address the second one.
A biodome is a self contained ecosystem that can support itself indefinitely. The best example of a biodome is where you are right now: Earth. Everything that lives on earth is connected. Plants and animals all have a symbiotic relationship with one another, depending on each other to survive. If humans wanted to one day live on another planet, we would need to create our own biodome.
While creating a biodome might seem like a simple enough process on the surface, there are many things that can go wrong. The earth is large enough to survive the extinction of species and other major events, but a biodome is much smaller. This means that major events make such more of an impact, and easily prove ruinous to a system.
If you want to learn about a Biodome experiment that was performed in the 1980s, be sure to check out this article: http://www.moss.amsterdam/2020/05/20/the-world-of-biodomes/
And as always, be sure to reach out if you have any questions about hydroponics.