Posts by Philipp
When you want the orbit of earth around the sun to get higher, earth isn't falling out of orbit, it is raising out of orbit. To get an object in orbit to a higher orbit, you need to add rotation en...
I am currently designing a megastructure which is supposed to provide living- and workplaces for about 100.000 people. It is supposed to be designed in a way that it provides everything the inhabit...
Questions about how to feed a large population keep popping up on this website quite frequently. One obvious option is farming. But how many people can you feed per square-kilometer of farmland? I...
Through extreme pollution and large-scale warfare with atomic, biological and chemical weapons Earth has become completely unable to sustain life. The atmosphere is toxic, the water undrinkable and...
What properties of a species of plant would make it the ideal choice for taking it on a year-long trip through space as both an oxygen source and food source? We should assume that the amount of ...
I have read (and answered) the question: "If true artificially intelligent robots could be built, would they be allowed human rights?". But let's explore the topic from the other direction. Let's...
No, I am not talking about space ships, I am talking about water-based ships sailing the oceans on planet Earth. What would be a plausible cruise speed and maximum speed for what would be the equi...
Rivers of lava are a staple of fantasy. But in the real world, lava flows are usually very short-lived phenomenons caused by volcanic eruptions. Is there some plausible way on an otherwise earth-l...
It is estimated that in about five billion years, our sun will enter its red giant stage. During that phase it will expand and completely engulf Mercury, Venus and possible Earth. Earth will either...
