Questions tagged [science-based]

For questions that require answers based on hard science, not magic or pseudo-science, but do not require scientific citations. Contrast with the hard-science and reality-check tags. Do not use this tag as the only tag on a question because it describes how the question should be answered, not the topic.

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How can we maximize the speed of a bipedal digitigrade humanoid?

How fast can a digitigrade bipedal ape possibly run? I've raked through any question I could find on here talking about speedy bipeds or digitigrade bipeds (that aren't robotic/synthetic), but none ...
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5 votes
0 answers
138 views

Questions about the potential characteristics of a hypothetical Planet 9

So, I'm writing a story. Most of the main story is set near Planet 9, which has finally been found somewhere far out in the outer solar system. So first, I’ve been working on determining the probable ...
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4 votes
2 answers
76 views

Day/night cycle and tracking celestial positions in S-type binary star system

I know this has been asked before but I'm going to pose the question again under slightly different circumstances and with a more specific goal. I'm trying to work out the details of how the day/night ...
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4 votes
1 answer
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Molecular ecology for endogenous formamide formation?

Kind of a follow-up to this earlier question: How could formamide lakes form on an exoplanet? Suppose the problem of how to get an initial quantity of formamide is solved, and microbial life has ...
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3 votes
2 answers
98 views

What would the rest of the oceans look like in this scenario?

The scenario being this: The red band extending 15 degrees from the equator is a dead zone, too hot for complex, multicellular life to thrive. How hot are we talking? The equator in this scenario ...
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3 votes
1 answer
220 views

How to Turn Protoceratops Into a Real-Live Griffin

It was believed that the discovery of a small, herbivorous dinosaur named Protoceratops was the inspiration for the creation of the iconic griffin, a belief challenged in 2016 by paleontologist Mark ...
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3 votes
0 answers
150 views

Help with my ocean currents

First off, I'm really not good with designing ocean currents (I find the topic confusing and hard). But for my world which is basically just earth over 100 million years in the future, I need to ...
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2 votes
2 answers
102 views

Can an organism have body structure materials that crumble upon being injured?

I'm working on building a species of wild animal, and I have several criteria in mind, and I'm looking for any glaring issues I may have missed that makes such a creature entirely infeasible ...
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2 votes
0 answers
88 views

Countering gravitational bead instability

I started thinking about Alderson disks. They are usually portrayed with large uninhabitable sections on either side of the habitable zone. Why not just build the habitable zone, and save materials? (...
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2 votes
0 answers
75 views

Does twice the planet radius mean two bands of desert per hemisphere?

Earth has three convection cells per hemisphere, resulting in each hemisphere having a band of desert at the end of the Hadley cells. Given a planet with the following characteristics: Twice the ...
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2 votes
0 answers
99 views

Wind strength in a massive planet

I'm working on this planet that has 1.5x earth's mass, so the gravity is a little stronger, given that the density it's the same. The gravity is 1.15x earth's. As i don't know how to calculate the ...
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1 vote
0 answers
108 views

Which would be the Koppen-Geiger climate distribution of this map?

The existence of closed seas makes it difficult to me, especially the East one. I have it clear that in the souteast region the climate would be influenced by monzoon, but if the world has only one ...
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1 vote
0 answers
80 views

Advice to start creating a plausible fantasy map with plate tectonics

Well hello! So im going to create a fantasy map for a speculative biology project, i had created some but this time i want to create a map with these characteristics: A supercontinent with 2 smaller ...
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1 vote
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65 views

What would the climate of a Pangaea-Ultima-inspired world be like?

In a sci-fi scenario, human explorers have discovered a binary of G0 stars, each one 105% as wide, 110% as massive and 126% as bright as our sun. Orbiting this binary within its habitable zone is an ...
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1 vote
0 answers
75 views

In regards to mass and luminosity, what are those mystery stars?

Long ago (4.6 billion years, to be exact), a hyper-advanced alien civilization had created a solar system from scratch. Somehow, they had artificially prolonged the center of the solar system--a ...
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1 vote
0 answers
80 views

How do storms scale with planet radius?

I'm trying to figure out how weather scales with planet size, keeping other factors constant. For a specific example, say a planet with the following characteristics: Twice the radius of Earth. ...
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1 vote
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Will the Anatomical Differences in These Humanoids Affect Baby Development?

Okay, here are two hypothetical species of the genus Homo. One averages 67 to 84 inches (170-213 cm) in height and 99 to 110 pounds (45-50 kg) in weight and gives birth to twins. The other averages ...
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1 vote
0 answers
43 views

In this infant (<500 million years) solar system, how far would each orbit be to be stable?

Here's the story: There is a solar system that is still a baby, less than 500 million years old. There are a total of eight stars clumped into four binaries, each one with its own habitable zone. ...
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1 vote
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67 views

Effects on World Climate without (Most of) northwest and central Europe

So I'm considering creating a fantasy setting heavily modelled on Earth with the exception that most of what we consider Northwest and Central Europe is replaced by sea. I decided to as a reference ...
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1 vote
1 answer
108 views

Life in the Temperate Zone of an Alternate Earth with an Axial Tilt of 42 Degrees--What Would the Seasons Be?

Suppose that in an alternate universe, Earth has an axial tilt not of 23.5 degrees, but 42. This means that from the equator, tropical climates with binary seasons (wet and dry) would persist from as ...
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1 vote
0 answers
105 views

How Bright Would the Sky on This Alternate Earth Be? The Sequel to "The 372-Day Calendar"

Long ago, I asked how far Earth would orbit the sun if one year lasts 372 days instead of 365 and how much it'd affect the overall brightness. What I got was that Earth with a 372-day calendar would ...
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112 views
+500

How much resources would be needed to make significant damage with a chemical laser?

Context: It is the future and some sci-fi technologies are starting to be used, such as lasers. More specifically, chemical lasers. The thing is that I want to know about nowadays technologies in ...
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1 answer
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Would the sort of tectonic activity described below shorten Earth's lifespan?

The unfortunate truth is that hundreds of millions of years in the future, Earth will have used up all of its radioactive materials. And when that happens, tectonic activity will stop and magma will ...
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0 votes
0 answers
62 views

Would a longer PETM make Earth hotter than it was?

Sometime between the Paleocene and Eocene epochs, there was a mysterious, sudden, dramatic rise in global temperature. This moment in time was known as the "Paleocene-Eocene Thermal Maximum",...
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-1 votes
1 answer
233 views

The Serina Series: Episode III: Pterosaurs

Let's take a different route and not take the Serina route using a modern species. Today, we're looking at pterosaurs. But considering that pterosaurs had ruled the skies from the Late Triassic to ...
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