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Somewhat in relation to this question - What could restrain post-singularity societies from spreading across the Galaxy? I'm assuming not all star systems move at the same velocity in relation to ...
Concerning long term effects of zero gravity on humans living in space compared with those living on super earths with 1.5x to 2x G, how could the gravity differences cause reproductive failure amo...
In the Star Trek: Voyager episode "Thirty Days", there was a planet made completely out of water, which is the inspiration for this question. However, that planet was held together by an artificia...
If the North and South Poles' ice melted instantly, what would be the effect on humans and other animals? Would the sea creatures thrive? Would a lot of land get covered by water?
While we develop space travel technologies, the Moon will always be the first destination. By its proximity to Earth is the obvious target to test our technology. Before we can establish some kind...
I would like to have a planet in which somehow it becomes necessary to harvest aurora for energy (and maybe matter if that's feasible). The civilization of this planet is moderately advanced -- e...
Picture a planet identical to Earth, but with rings. It has a satellite similar to the moon, except smaller; I'm not sure how big it needs to be but distance from the planet is more important so ...
Given ideal circumstances and a type 4 or 5 Kardashev scale level of technology to set the system in motion (but not to maintain the motion over time): How many planets 1/4 of the Earth's mass co...
A long time ago I heard about a Medieval Irish pirate that used a Trebuchet mounted on his ship (no I am not sure what he was or where I heard it). The idea of a ship acting like a double pendulum...
In a few science-fiction books I've read, the world that the story takes place on doesn't have a sun, but does have a "sun belt," where (instead of a regular sun) the world is lit by a stretch of s...
I know the idea seems a bit far fetched but it's something I believe is common is science fiction and fantasy stories. I remember the talking trees of Zelda: Ocarina of time and of course, Tolkien'...
I want to build a planet (or satellite) that: is smaller than Earth, has a thicker atmosphere than Earth but breathable, has neither intense volcanism, nor any extreme condition of that sort that...
Suppose the Earth entered a period of intense global warming, say by 50° Fahrenheit (28° Celsius), and then levelled off at the new, higher, temperature. Obviously, anywhere near the equator would ...
Defining what is a super intelligent civilization: An industrial civilization that invest on scientific progress and that builds and manipulates computers, robots and nano-machines, has effi...
Inspired by comment under this question "Darling, does this dress make me look fat? QUICKSAVE "Uhm ... no?" WRONG ANSWER, WANNA TRY AGAIN? We all dreamed about having possibili...
Is there any feasible way to create a long-term sustainable habitat on the sun? My target region for habitation is the temperature minimum at the bottom of the solar atmosphere. Metals would have ...
Given the approximate technology level of us Humans today. Is there enough of each material needed by our modern civilization in Asteroids to make this economic? And would the materials be used fo...
Would it be possible for a planet-wide climate be set so that the temperature even at the poles would continually stay within a narrow range between 17 and 21 degrees Celsius? (This is approximate...
Starting with about 500 humans and allowing for 900 years to pass, about how many people would there be at the end? (Just asking for a rough estimate, maybe a range.) Assuming: People are general...
One way, I think, is if the gravity is exactly correct. However, while I think the water might be in a unstable equilibrium, I have been unable to work out the mathematics. Let's assume that such a...
Recently, a robot called Philae soft-landed quite safely onto the comet 67P/Churyumov"“Gerasimenko, then shot some photos and got some other interesting information that was sent back to Earth. Thi...
Picture the future, where man kind has spread out across the galaxy. What would be the most precious and sought after materials? Today it is metals like gold and platinum that are most sought aft...
By extremely high gravity, I specifically mean around 28 Gs. I recently asked this question with regards to inhabiting the sun, and surviving in the sun's gravity seems like one of the major challe...
I know it's been proven false in our world, but what is the most plausible mechanism by which an Open Polar Sea could form and persist? I don't mean all the ice melting, but an open sea as it was ...
When traveling at fast speeds through the galaxy, would it be possible to identify where all the black holes were on your path? I know most black holes are identified by their affect on other nearb...
