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As a source of food, would it be possible to have fish and/or plants living inside a water tank situated between the fusion or fission power plant and the crew quarters of a ship? The ship in ques...
As per the title, given A billion ($10^9$) dollars. Present day technology. A year of time (including making projects and testing), (preferred, not compulsory) No restriction about maximal nor mi...
Setting The US is waging a failing War on Drugs where cartels are quickly gaining power. Scenario In the near future, say 2030, with current technology, the Texas state government is implementin...
Arising from the comments in This Question, which started to stray offtopic into the question of whether men are needed at all. In Short: Could you create a fertilized human (necessarily female) f...
This is inspired by What single element could destroy the world?. Injecting sulfur dioxide into the atmosphere has been proposed as a mechanism to relieve the symptoms of global warming by creatin...
In How large a bioengineered mobile lifeform could exist on Earth?, I asked how big my nanoassembled war beasts could be, and it was suggested that I make my question more specific. I am designing...
When looking to design armor - how can I determine whether a given ballistic object would completely stop, deflect into another direction, or penetrate another object given complete physical inform...
For my story, I need to know the following: I have a (long exposure) analog (as in "not digital") picture of the night sky taken on a random planet somewhere in the Milky Way galaxy. I know it i...
Given that a laser beam is made up of coherent light waves running in parallel in the same direction, and that space is not a complete vacuum (dust, radiation, electromagnetic forces etc.), what ki...
I want to play with the idea of a sapient species evolving on a world where at least part of the world experiences a permanent day. The obvious way to doing this would be where part of the world f...
The Halo video game's extended universe book Halo: Evolutions describes the Battle of Psi Serpentis, in which a superjovian planet is converted into a brown dwarf via massive nuclear bombardment of...
So I'm writing a setting featuring asteroid mining à la Deep Space Industries, where the material mined is used for construction in space rather than brought to Earth. To maximize efficiency, I'm ...
In many movies we see super heroes creating walls of ice to block explosions and bullets. How realistic is this? In the Incredibles Frozone shoots ice at a police officer just before he shoots a ...
I gave this a quick test on sandbox, and agreed with the comment that I should steer away from the physics part and focus on the geology, etc. Assuming Europa's ice crust is 10km thick as some spe...
Imagine someone from the modern day somehow gets transported back in time around the same time of WW2 without warning ahead of time. He has with him a laptop, graphing calculator (and a hand full ...
I've built a device, it's capable of turning matter to energy and energy to matter with perfect efficiency, I've got the resources to build a space station in secrecy, and I want to get off the pla...
A large solar flare event ignites the atmosphere of Earth, but luckily, humans have been preparing for an event like this for some time. We have a fairly large shelter around 2.2 kilometers undergr...
Okay, so now that we've established that the badger folk (or Melinae sapien, if you want to be politically correct) are trading their ore to the humans for cat food. Now we need to determine what ...
Lets say I have a space fleet flying to attack an installation. The enemy knows I'm coming but not my numbers or exact disposition. Since I'm moving much slower then C the light from my fleet wil...
Well, I ask the question because apparently I am going to aim for NaNoWriMo. I am calculating the density of a planet with 1.8 Earth masses and 0.9 Earth radii, but last I checked, the calculation...
In this question, it's pointed out that the L3 Lagrange point, where a "true" Counter-Earth would lie, is in fact unstable, and over time any object there would drift into a different orbit. Obvio...
Many fantasy stories involve large spiders like in Harry Potter. These creatures behave almost exactly like normal spiders despite their size. My question is: can large spiders still walk upside d...
Vertebrate tooth enamel is made from Hydroxylapatite, however this need not be the only material available that an alien species could use to make teeth or tooth-like structures. Given that an ide...
Note: I am aware of a previous question Physiological effects of living on a world close to a black hole As I understand it, that question refers specifically to a planet that is in a non-ideal ...
So this was done in Starship Troopers and I am curious if it is realistic for interplanetary warfare. The idea is that aliens launch meteors at major metropolitan areas...and it ends poorly for th...
