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Would it be possible for a planet to naturally have a moon or large natural satellite at one of its Lagrange points? If so would it then also be able to have a second moon that would be orbiting t...
Lets say you have an average-ish magnetar "” about 3 solar masses, with a magnetic field of 108 teslas (it's decayed a bit since it was born). Now lets say we have a solar system with a small-ish ...
This is an edit of a previous question. It has been edited so I can be more specific in my asking, as I'm still confused after looking at the answers to a similar question to my original. I have a...
In a world similar to ours, a mad scientist is bent on preventing the ascendance of one certain individual over the rest of the people inhabiting the northern part of the continental America, also ...
Suppose a starship is being powered by a lasers beamed first from the departure star, and then from the destination which is a moving base. The ship is moving in the regime of 10"“30% of light spee...
While the vampire is a monster of folklore, modern technothrillers (e.g. Federal Vampire and Zombie Agency, Ultraviolet, Blade, Underworld, Daybreakers) have portrayed vampires as humans infected b...
In our universe infinite energy is not possible, at least given the known laws of physics. But in another universe what would allow for energy to be in the same amount as space? But how large i...
It is 2057 and a manned mission to Europa has been comissioned in the prospect of further exploring the ecosystem and energy signatures of Europa. Unlike the implied unnmanned probe, this mission ...
Not a tank that could survive being shot with a 1 GJ railgun (pretty sure nothing can survive that), but a tank that can withstand the recoil of a 1 GJ railgun that's been mounted to it. Obviousl...
A livescience.com article claims that trees can reach a theoretical height of 400 to 426 feet (122 to 130m). This is due to the tree being unable to carry water up to the top at that certain point ...
In Lyman Stone's fantastic blog post about George R. R. Martin's A Song of Ice and Fire series, Stone mentions that the seasonal cycle of Westeros is very unrealistic. Here's the truth: Medieva...
I have seen a few similar questions but none seem to take the density of a planet into account. I'm creating a planet on which several small civilisations develop. The planet needs to have a few bi...
A terrible virus has made most of the populations and government officials of the largest superpowers on Earth stark, raving mad, without depriving them of their intelligence. They have decided t...
I have two planets that are the exact same size and mass of Earth. They orbit each other, and have an orbital period of one day. How far apart are they? The planets both orbit a star the same as t...
I wrote a novel based on a human civilization that lives floating cities and dirigibles on a small, atmosphere-abundant super-Earth with a liquid water core (there's a smaller solid core under that...
This question discusses what you'd look at from space, but mostly focuses on how you could identify the weather. This question discusses what resources a colony would need, but doesn't discuss ho...
I ask because I have a problem trying to find an appropriate launch window around that time or any point in the mid-1980s, and I need to reach Jupiter via Hohmann transfer so I can then use a serie...
I'd like to justify a lightning man in my world, and I have a theory that by some sort of magic, his cells in the dermis (middle layer of the skin - okay, for simplicity, don't count hair) are able...
I know the innate contradiction present here: one cannot "prove" the supernatural exists, for a variety of reasons. But for the sake of argument I want you to consider this: A person is convinced...
Scenario: I have a generation ship moving between two star systems. Given that such a ship needs to have a completely self sufficient life cycle system to make it viable, ejecting mass continuously...
What kind of system using modern technology would be able to counter a railgun projectile on a vehicle (both land and sea)? Would a think slab of angled armour in the shape of "<" work to cover ...
I'm trying to design a realistic genetically engineered nanotech super-soldier with a full set of redundant organs. How much more interior volume and thus height/weight/muscle mass would a human bo...
After watching this brilliant video by Shoddycast about Stimpaks in the Fallout universe: https://m.youtube.com/watch?v=CLY-FMxsb2U I started to wonder. Just how many of science fiction's most me...
So for my story I want to have a binary planetary system, where both planets are about the size of earth and are habitable by human people. I'm also thinking that they will be tidally locked to eac...
Our intrepid interstellar crew arrive in a new solar system. The find a planet in the Goldilocks zone. However the planet has no life, but is otherwise earth like*. The atmosphere is 80% nitrogen, ...
