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Is it possible to calculate/estimate the size of a star's heliosphere? If so, how? I am working on a semi-near future, sci-fi novel. As part of the technology base, humans are able to travel betwe...
If a planet like Crait existed and was covered by (mostly) white sand, what would its average albedo be? Crait is a planet from Star Wars that has a thin layer of white salt on its surface.
On Earth, all plants are green because they contain the pigment chlorophyll, which photosynthesizes by absorbing all light except green light. However, it is quite possible - if not likely - that ...
If a circular structure could be built that would wrap around the entire earth, but was of a larger radius, would it 'float' above the earths surface or would it somehow fall onto the surface at so...
In the relatively realistic (hopefully), near future, scifi book I am writing I am at a point where I am describing the observation deck of a large ship belonging to a wealthy "business man" (see s...
The 12 planets in my solar system orbit the G-type star of Nemo. It's about nine-tenths of the size of the sun, and has a stellar luminosity of 0.67 L☉, a diameter of 1.28 million kilometres, a s...
I currently have a character whose fields are destroyed as they are at the base of a valley, and the rain has completely killed the seeds and waterlogged the dirt. Thus, main character needs to dig...
Lithotrophy is a phenomenon known from microscopic life, where an organism converts inorganic substances, usually minerals, into energy. So, we know that a single-celled life form can do this, but...
A civilization creates a supermassive black hole with an electric charge such that the radius of its inner horizon is 3/4 the radius of its outer horizon. In nature, a black hole with this much el...
I am building a planetary system, but I always thought how many planets should I have in this system. When you look at our solar system there are 8 planets. Other exoplanetary systems can have up...
So, I know that there are naturally occurring beaches that are various 'odd' colors like pink, black, green, and orange and I was wondering if the color of this sand would have any effects on the c...
I'm creating various artificial Time Bubbles in my universe where time flows faster or slower inside a specified area, typically depicted as a semi-transparent bubble. Before developing any more st...
What could be reasons to use direct current in the distribution of power? I know that it is more efficient to distribute current at high voltages to reduce heat loss and that it is easier to step ...
I'm currently playing with a geographical setting that's flat rather than round and thus doesn't follow a lot of the same rules as one modeled as a planet. I've found resources concerning climate i...
Context For reasons unknown a large, powerful company wants to engineer colossal squids to catch or kill sperm whales. They have tons of money to do this and even more resources.Just one thing... ...
I am making a reincarnation novel with all of the protagonist's memories intact from the previous life. So what is the time when the protagonist can actually communicate through speaking?
I'm making a simple planetary system with a primary similar to our sun and a planet like our earth. This earth analog has a moon similar to our moon, just smaller and closer. How do I calculate ...
Let us assume that we are settlers on some alien land and we run into a terrestrial, territorial pack carnivore among the local fauna. This animal has many of the traits needed for domestication: ...
While there are approaches to make a habitable Dyson sphere that are technically reasonable, I am curious about what the climate would be like. For simplicity, consider a scenario where a thick she...
In my world, all of my demihumans have evolved from the same ancestor from modern humans. This conceptually includes my version of Reptilians/Lizardfolk. For the most part I would have them share t...
Life had been good for a certain class of tetrapods. They evolved two layers graphene in a specialized collagen creating a relatively thin yet seemingly impenetrable hide. All of their natural pre...
I have four similarly-sized planets (5000-6000km radii) all in circular orbits 10 million km apart (i.e. 300M, 310M, 320M and 335M km from the sun respectively). They are 0.37, 0.61, 0.64 and 0.83 ...
Question definitions: "safely" - the metal would be strictly beneficial; there would be no health problems caused by it (perhaps at least for most, there may be "birth defects" which cause some of...
So, out in Colorado, in the city of Den (population 1600), there is a huge problem. Before the war, a geneticist lab was trying to create police dogs that were stronger and superior to normal dogs....
I have a planet in earth's solar system that is on a comet's orbit rather than like the orbits of the planets we have. I need some help picturing how this would work to meet a few requirements for ...
