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13.1k posts
 
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Q&A Maximum habitability of a planet with no indigenous life

I've been thinking about terraforming and planets in general. We can look at the planets we know that might be terraformable - Venus and Mars - and understand the technical requirements for doing ...

7 answers  ·  posted 7y ago by Simba‭  ·  last activity 7y ago by Simba‭

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Q&A What are ways I could design a viable split jaw?

At the minimum, I'd like to create a creature with a jaw structure that splits into 4 moving parts (like a +-shape or an x-shape). In order to keep food in, the cross sections will have stretchy fl...

5 answers  ·  posted 7y ago by Tardigreat‭  ·  last activity 7y ago by Tardigreat‭

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Q&A Could more Earth-like planets exist in our Sun's "goldilocks" zone?

These planets would be similar in size to Earth. Mars and Venus don't need to exist in this scenario. So how many Earth-like worlds can be squeezed into the sun's "goldilocks" zone? Mars and Venu...

4 answers  ·  posted 7y ago by Bolek‭  ·  last activity 7y ago by Bolek‭

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Q&A Considerations for venturing near a neutron star

I'm curious what might need to be considered if a group were exploring the vicinity if a neutron star. Gravitational waves and radiation could be dangers, but what else? Is it possible that habit...

3 answers  ·  posted 7y ago by James McLellan‭  ·  last activity 7y ago by James McLellan‭

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Q&A Psychological effects of non head-based killing techniques

Wait ... what? Basically, this: Most land predators on Earth use their mouths to kill their prey. That is, they have to stick their precious, irreplaceable heads into harm's way every time they ...

13 answers  ·  posted 7y ago by akaioi‭  ·  last activity 5y ago by akaioi‭

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Q&A Identifying an engineered virus

I'm about halfway through a novel about a very advanced alien civilization that is systematically wiping out other species using engineered viruses. I am hoping to have the protagonists test samp...

4 answers  ·  posted 7y ago by JVerse‭  ·  last activity 7y ago by JVerse‭

Question viruses
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Q&A Animal to have as an efficiently modified enemy to humans

I am trying to think of animals that would make the strongest enemy for humans if they were bred in a laboratory. My goal is to have an animal that begins by being used in a benign, controlled way...

11 answers  ·  posted 7y ago by shieldedtulip‭  ·  last activity 7y ago by shieldedtulip‭

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Q&A How strong could a land of ice clouds be?

In my world, there is a forest of giant trees on both poles. The trees create a canopy that is perpetually covered in ice. This frozen canopy extends so high that it supports a "land" of frozen clo...

3 answers  ·  posted 7y ago by Vylix‭  ·  last activity 5y ago by Vylix‭

Question ice clouds
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Q&A Could a human body survive the shockwave from a 2 megajoule explosion?

And if not, how could you reinforce it so that it would? I'm trying to figure out if it's realistic in any possible way for a cyborg to dodge or deflect a bullet, and while my initial assessment of...

3 answers  ·  posted 7y ago by Z. Schroeder‭  ·  last activity 7y ago by Z. Schroeder‭

Question cybernetics
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Q&A Which conditions would make aerial filter feeding successful?

Premise On Earth the seas have numerous filter feeding species, large and small, sustaining themselves on the microscopic nutrients and organisms that drift in the current. The largest animal evol...

7 answers  ·  posted 7y ago by rek‭  ·  last activity 6y ago by rek‭

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Q&A Compressed air lighting?

So I've got this civilization that doesn't have electricity, but does have municipal power distribution via compressed air lines. Now, you can do a lot of useful things with compressed air. Even i...

10 answers  ·  posted 7y ago by Logan R. Kearsley‭  ·  last activity 6y ago by Logan R. Kearsley‭

Question technology light
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Q&A What would happen to Earth if it were eclipsed for nearly 10 days?

What would be the major changes that could happen if Earth experienced a solar eclipse caused by a fictional planet for a minimum of 10 days? Mainly what would happen to the oceans and flora in suc...

5 answers  ·  posted 7y ago by Peaceman‭  ·  last activity 7y ago by Peaceman‭

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Q&A Effects of rapid (geological timescale) cooling of the Earths mantle

I am trying to figure out the geological effects that would happen if earths upper mantle was drained of heat. I am sure there are many ways that this could happen but the method that I am asking ...

1 answer  ·  posted 7y ago by Typhado‭  ·  last activity 7y ago by Typhado‭

Question planets geology
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Q&A How could my immortal avoid degenerative diseases?

So my main character was genetically engineered to be biologically immortal. By this I mean her DNA is a lot better than ours. The telomeres do not degrade over time same as genetic information. C...

5 answers  ·  posted 7y ago by user44784‭  ·  last activity 7y ago by user44784‭

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Q&A What should the approximate climate of a world with almost no sunlight be?

We are developing a game setting and, while discussing certain aspects of the it, have stumbled upon our inability to adequately account for some phenomena due to our lack of knowledge. The thing i...

5 answers  ·  posted 7y ago by Exander‭  ·  last activity 5y ago by Exander‭

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Q&A Getting to space without rockets or explosions?

Is there any way for a large civilization to get objects into space without using rockets or explosions? I'm considering a planet roughly equivalent to Earth, where (for whatever reason) rockets ...

6 answers  ·  posted 7y ago by sol0wingpixy‭  ·  last activity 7y ago by sol0wingpixy‭

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Q&A What are the realistic problems of a planet orbiting too close to its sun?

Assume we have a planet similar to earth in size and materials. But we put it in orbit of a mass much greater then our sun so that the year becomes much shorter like 10 days (or put it much closer ...

3 answers  ·  posted 7y ago by Matic Oblak‭  ·  last activity 7y ago by Matic Oblak‭

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Q&A How do I explain that an interstellar spaceship still requires risky spacewalks?

It is the mid 22nd century A.D. Twenty men and women signed on a ten year space exploration trip to the nearest star system. There are robots to do ship maintenance and a powerful A.I. to monitor t...

28 answers  ·  posted 7y ago by user6760‭  ·  last activity 5y ago by user6760‭

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Q&A Can a human skeleton be made of cartilage?

I'm working on this new story in which many people have developed "special qualities" or gifts - call it extreme DNA mutations, if you will. There's this character who has several rows of teeth (ma...

6 answers  ·  posted 7y ago by Elsie‭  ·  last activity 7y ago by Elsie‭

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Q&A Would a Roman civilization be willing and capable of building large scale sea defences against a serious but unrealised flood threat?

Scenario The straits of Gibraltar never quite opened and the entire Mediterranean basin is dry land apart from a few large salt water lakes at the lowest points ~5% by area. The Europe "“ Africa la...

2 answers  ·  posted 7y ago by Slarty‭  ·  last activity 7y ago by Slarty‭

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Q&A Could circa-1600 humans have domesticated or tamed kangaroos?

The article Why Can't All Animals Be Domesticated? on Live Science sets out a list of criteria that a species needs to meet in order to be successfully domesticated by humans. In short, that list s...

1 answer  ·  posted 7y ago by Canina‭  ·  last activity 7y ago by Canina‭

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Q&A By how much would I need to suddenly increase Earth's gravity to give an extinction-level event?

Assume Earth of today was altered overnight. Some percentage of the more common elements of Earth's bulk (silicon, iron, and so on) are replaced with something much heavier. This changes the ov...

4 answers  ·  posted 7y ago by Leezard‭  ·  last activity 7y ago by Leezard‭

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Q&A What would a world whose atmosphere is made up of primarily ammonia be like?

I'm trying to create a fictional world where the primary species breathes in gaseous nitrogen to survive (and hence relies on ammonia). I'm currently working with a planet that would be about the s...

2 answers  ·  posted 7y ago by Bookkitty‭  ·  last activity 6y ago by Bookkitty‭

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Q&A What other skills/affectations would be found in someone with heightened Proprioception?

I want a character who has a highly developed ability of empathy. She knows what others are feeling, and often thinking. This story does not have any supernatural or non-hard SF elements, so it n...

3 answers  ·  posted 7y ago by JDługosz‭  ·  last activity 7y ago by JDługosz‭

Question psychology humans
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Q&A Planet half the size of earth with two moons. Livable? Climate Range?

This planet I am proposing is approximately half the size and mass of earth and has two moons. The moons are respectively 1/8th and 1/10th of the size of the planet.The moons orbit the planet at di...

3 answers  ·  posted 7y ago by MrNinjaNerd‭  ·  last activity 7y ago by MrNinjaNerd‭