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Q&A

Posts tagged light

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Q&A Apparent Color of the Sun and Sky

The game Rodina features four planets, all with different colored skies. For some reason, the sun is a different color from each planet's surface (use this guide for reference). The four planets, ...

3 answers  ·  posted 8y ago by ThunderChild‭  ·  last activity 7y ago by ThunderChild‭

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Q&A Ultraviolet bioluminescence

Bioluminescence is badass. It involves living beings emitting bright light in the visible spectrum. Would it be, though, possible that a lifeform emits UV (ultraviolet) light? Does it occur in re...

1 answer  ·  posted 7y ago by Zoltán Schmidt‭  ·  last activity 7y ago by Zoltán Schmidt‭

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Q&A What are the conditions like in Mercury orbit?

In Mercury's orbit around the Sun (Solar orbit, not Mercurial orbit), what are the conditions like? What shielding or heat management would be required for a manned spacecraft? Could a spacesuited ...

1 answer  ·  posted 8y ago by David Eyk‭  ·  last activity 8y ago by David Eyk‭

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Q&A How to make exomoon lightning storms

I have a terrestrial moon that I would like to have spectacular and frequent lightning storms. What atmospheric compositions and conditions could cause this? Tools The moon orbits a 21 earth-mas...

1 answer  ·  posted 8y ago by emo bob‭  ·  last activity 8y ago by emo bob‭

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Q&A Making the Enterprise Fly

No, not that one. This one. I want to see the USS Enterprise fly, but I'm curious how it would be accomplished in any realistic fashion. Now, the world I'm building that needs a flying Enterpri...

6 answers  ·  posted 9y ago by Danny Reagan‭  ·  last activity 8y ago by Danny Reagan‭

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Q&A How would the terrain of a desert be impacted by abnormally-frequent lightning strikes?

As usual, another interesting scientific question, taken from /r/worldbuilding. Would it mean any difference for a desert, where the amount of threatened objects is so low? Or would it form the ge...

1 answer  ·  posted 8y ago by Zoltán Schmidt‭  ·  last activity 8y ago by Zoltán Schmidt‭

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Q&A How would lighthouses work in space?

In my world spaceships are guided by lighthouses floating in space instead of electronic navigational systems. A lighthouse in space has the shape of a huge sphere emitting intense red light. Like ...

8 answers  ·  posted 8y ago by Javert‭  ·  last activity 8y ago by Javert‭

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Q&A If an FTL spacecraft entered Earth orbit, how long would it take for humans to build a FTL spacecraft?

It's just another average day in the life of modern day earth. Suddenly a transmission from orbit washes over the planet! Oh no! An alien race, calling themselves the "Thull", has suddenly arrived ...

11 answers  ·  posted 8y ago by Marky‭  ·  last activity 8y ago by Marky‭

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Q&A What would a ship with an Alcubierre Drive look like?

I am designing a video game in which Alcubierre Drives will be obtainable by the player. I would like this game to be somewhat scientifically accurate in this way. Specifically, I am interested i...

1 answer  ·  posted 8y ago by john01dav‭  ·  last activity 8y ago by john01dav‭

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Q&A Spitfires in Space! or Aircraft inside a Rotating Habitat

Lets say we have a huge cigar shaped habitat, filled with a breathable atmosphere, and rotating on one axis at the right speed to have about 1 'g' of acceleration on the inside surface. To give th...

4 answers  ·  posted 8y ago by Amziraro‭  ·  last activity 8y ago by Amziraro‭

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Q&A Flying Bike: Steering

Ok, so I'm making a setting where people have colonized various objects in the solar system and out of it. One thing I know I want to include to flesh it out a bit* is a sport for low-gravity envir...

1 answer  ·  posted 8y ago by Jetscooters‭  ·  last activity 8y ago by Jetscooters‭

Question flight light
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Q&A hypothetical criteria for non-paradox FTL

Many sci-fi questions here are derailed by complaints that the proposed version of FTL breaks causality. However, relativity-safe FTL concepts do exist. What range of conditions allow FTL (movement...

6 answers  ·  posted 9y ago by Foo Bar‭  ·  last activity 8y ago by Foo Bar‭

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Q&A High-Altitude Life?

So here's the rough idea. I'm trying to figure out what kind of life could exist that spends basically its entire life in the air, for an alien world I'm working on. No sentient life, just wilderne...

3 answers  ·  posted 8y ago by possiblySerious‭  ·  last activity 8y ago by possiblySerious‭

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Q&A Great Flying Cthulhu

I know, it sounds like a geek swearing at Windows 8 on his work-owned computer. But actually I was just reading Peter Clines (Fold and then had to order 14 for instant delivery), and when I got to...

1 answer  ·  posted 8y ago by JDługosz‭  ·  last activity 8y ago by JDługosz‭

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Q&A Space Mechs or Tanks or Planes or Marines - Fighting in space without blowing up each other's starships

Suppose that there are 2 interstellar empires at war with one another, both armed with FTL drives which cannot be used within a certain radius of huge gravity fields, stars, gas giants, etc. Anothe...

13 answers  ·  posted 9y ago by grimmsdottir‭  ·  last activity 8y ago by grimmsdottir‭

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Q&A How would two ships travelling at light speed communicate with one another?

Supposed we have a ship travelling at the speed of light, or very close to it, or over. A second ship is travelling behind it at the same speed. The second ship wishes to communicate something ...

11 answers  ·  posted 9y ago by roryok‭  ·  last activity 8y ago by roryok‭

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Rigorous Science Is moonvertising feasible?

As the legend goes, Coca-Cola was planning on shooting lasers at the moon to project their logo. Unfortunately, the FFA said no (they didn't want planes to be blinded). I haven't been able to confi...

3 answers  ·  posted 8y ago by PyRulez‭  ·  last activity 8y ago by PyRulez‭

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Q&A Consequences of perpetual daytime on plants growth

What would happen if a planet like Earth were to be tidal locked to the sun? What effects could it have on lifeforms like plants? Would they always produce oxygen?

3 answers  ·  posted 8y ago by Marco Filippozzi‭  ·  last activity 8y ago by Marco Filippozzi‭

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Q&A Jumping vs. FTL speeds: economic differences

At a crucial point in the development of human civilization, there is a split in the timeline: one where FTL travel is facilitated by jump-drives/wormholes, and another with superluminal speeds (St...

7 answers  ·  posted 8y ago by Vermilingua‭  ·  last activity 8y ago by Vermilingua‭

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Q&A Evolution of a creature that uses light as a weapon

On our world we have any number of creatures that use: Noxious Chemicals Poison(Spiders and Snakes being the obvious examples) Sound Electricity as an alternative to their teeth and claws. One...

18 answers  ·  posted 9y ago by Tim B‭  ·  last activity 8y ago by Tim B‭

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Q&A Would wing suits be an effective mode of transportation for halflings?

Let's assume that a halfling is of similar build, but half the height of an adult human. If I strap a wing suit onto one, I should have a quarter the surface area, but one eight the weight of an ad...

2 answers  ·  posted 8y ago by ckersch‭  ·  last activity 8y ago by ckersch‭

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Q&A Is it possible to have lightning create complicated fulgurite geometry above ground on a magnetically active world?

Hanorane (han-or-a-ney) is a moon with a dynamic surface covered in charged sand particles that drift in massive rivers suspended by electrostatic levitation. The only solid ground is the worn an...

1 answer  ·  posted 8y ago by Josh Belmont‭  ·  last activity 8y ago by Josh Belmont‭

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Q&A Could an ocean planet reflect its watery textures onto earth?

Let's say there's an OCEAN planet smaller than Earth but larger than the Moon. The Sun lights on the ocean planet reflecting the water textures onto Earth. Would it be possible to see watery refle...

2 answers  ·  posted 8y ago by Reinkkwer‭  ·  last activity 8y ago by Reinkkwer‭

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Q&A Ridiculously Fast Supercomputer

Let's say that somehow, Earth suddenly acquired a computer with ridiculous speed. This computer can run a program described in a language of your choice, which can be described by a readme file tha...

14 answers  ·  posted 9y ago by rodolphito‭  ·  last activity 9y ago by rodolphito‭

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Q&A A world with 1/3rd gravity but 1/2 atmospheric pressure. Would it be easier to fly?

Let's say on an alien planet called Thindor, the surface gravity is 3.27 m/s2 (which is 1/3rd of Earth's). But the atmospheric pressure is only 50 kPa (which is 1/2 of Earth's). Assume the same 20/...

6 answers  ·  posted 9y ago by DrZ214‭  ·  last activity 9y ago by DrZ214‭

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Q&A How can I set a moon on fire?

So, for reasons which may or may not pop up in a later question of mine, I need to light a small Moon-like moon on fire. Well, sort of. See, I need a small object capable of emitting a lot of ligh...

6 answers  ·  posted 9y ago by HDE 226868‭  ·  last activity 9y ago by HDE 226868‭

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Q&A Why would people use flapping-wing instead of fixed-wing aircraft?

Ornithopters are vehicles that fly by flapping their wings, rather than trough use of a propeller or jet engine. They've been proposed and built many times throughout history, and are a common elem...

6 answers  ·  posted 9y ago by ckersch‭  ·  last activity 9y ago by ckersch‭

Question flight light
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Q&A What if time travel had to take into account spatial distance?

In this setting, humanity has advanced to the technological capability of extra stellar travel via faster-than-light drives. However, due to distances between inhabited areas being extremely large,...

3 answers  ·  posted 9y ago by Zer0ah‭  ·  last activity 9y ago by Zer0ah‭

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Q&A Is there a scientifically sound faster-than-light travel system for a spaceship?

Recurringly in Sci-Fi spaceships manage to make it to lightspeed and above. Is there a scientifically plausible explanation of such capacity? How does it impact the spaceship's design and its passe...

4 answers  ·  posted 9y ago by Sheraff‭  ·  last activity 9y ago by Sheraff‭

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Q&A Polarity of a planet's lightning strikes reversed?

On Earth, the planet itself is negatively charged and the clouds are positively charged, causing lightning to travel from the clouds to the surface. While there are significantly smaller wisps of l...

2 answers  ·  posted 9y ago by The Glis Jackel‭  ·  last activity 9y ago by The Glis Jackel‭