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Q&A

Posts tagged radio

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Q&A Can velocity drift be used to calculate a radio wave source's distance from Earth?

If you're studying radio signals from Earth, is it possible to calculate whether a radio source is 'near' as in near Earth or 'very far away' as in somewhere far out in space from velocity, or velo...

4 answers  ·  posted 3y ago by zeno‭  ·  last activity 2y ago by HDE 226868‭

Question astronomy radio
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Q&A How long will it be until the cosmic microwave background is undetectable?

I've had a number of interesting conversations with people about how the cosmic microwave background (CMB) will evolve in the future. The CMB is the sea of photons left over from the epoch of recom...

0 answers  ·  posted 2y ago by HDE 226868‭  ·  edited 2y ago by HDE 226868‭

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Q&A How to mine a moon made of half uranium and half radium?

Imagine one day the moon suddenly transformed into a colossal elephant's foot and we need to get to the moon to obtain sample... Could it be done using modern day technology to mine the uranium for...

3 answers  ·  posted 3y ago by user6760‭  ·  last activity 3y ago by user6760‭

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Q&A Transporting radioactive fuels

Imagine a light spaceship capable of traveling at 0.999c is tasked to tow a radioactive cargo containing millions of tons of polonium and radium, however the container holding the radioactive mater...

4 answers  ·  posted 3y ago by user6760‭  ·  last activity 3y ago by user6760‭

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Q&A What evidence would there be if radioactive decay changed 7,000 years ago?

I know we generally operate - or religiously operate - on the principle that fundamental things don't change over time. It's the bedrock of geology - Uniformitarianism. I also believe it is unprova...

9 answers  ·  posted 3y ago by Vogon Poet‭  ·  last activity 3y ago by Vogon Poet‭

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Q&A Can a radioactive moon affect life on a planet?

This question is meant as a reality check on this answer to The land grows evil and corrupted ... but why? Radioactive moon in a nearly geosynchronous orbit. It slowly kills or alters all li...

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

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Q&A What could be a plausible scientific explanation for a man with radioactive skin that acts like a nuclear reactor?

A bit outlandish, but here me out: I'm trying to make a villain for my story who's essentially like DC's Fallout in powers. Attribution: January 2015, dc.fandom.com/wiki/Fallout That being said...

2 answers  ·  posted 3y ago by Strivs‭  ·  last activity 3y ago by Strivs‭

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Q&A How far away would an alien civilization need to be for us to not notice them?

Far away, across the vastness of space, lies an alien civilization, who are pretty similar to us. They've got ice cream, peer to peer networking, and photography. More importantly, they do lots of ...

6 answers  ·  posted 6y ago by ckersch‭  ·  last activity 3y ago by ckersch‭

Question aliens radio
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Q&A Could a passive radar-sighted creature see by space radio emissions?

I am working on a world which is very dark due to an opaque gas layer in the hight atmosphere; but it is opaque mostly in the terahertz range. The creatures in this world therefore rely very little...

1 answer  ·  posted 3y ago by Renan‭  ·  last activity 3y ago by Renan‭

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Q&A Keeping GHz wireless RF out of our heads without stopping the internet?

Premise: Neurologists found that GHz wireless RF had modest but quite negative effects on people's brains. Subtle collective effects in neuronal firing patterns across the brain due to interactions...

3 answers  ·  posted 3y ago by uhoh‭  ·  last activity 3y ago by uhoh‭

Question communication radio
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Q&A What would make radio transmission unfeasible on a planet?

I am looking for a good reason to make radio communications on a planetary scale unfeasible or impossible. Short-range use is acceptable, but no transmissions should make it to orbit or over the ho...

5 answers  ·  posted 4y ago by flexneck‭  ·  last activity 4y ago by flexneck‭

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Q&A Asteroid material that can cause signal distortion

I'm making a hard-ish sci-fi universe where humans colonized nearby star systems and found not one but two civilizations in Alpha Centauri, each at home on a planet orbiting one of the two main sta...

2 answers  ·  posted 4y ago by PecaWolf‭  ·  last activity 4y ago by PecaWolf‭

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Q&A Could a Superhero with radio wave powers hear the radio?

Is it was technically possible for a superhero that senses radio waves (like low frequency EM) to "hear" the radio? This superhero senses radio waves a bit like we can see visible light, though n...

2 answers  ·  posted 4y ago by Nierninwa‭  ·  last activity 4y ago by Nierninwa‭

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Q&A All the Radioactive Metals Inside Earth's Core--How Would They Affect Convection?

In relation to a recent question of mine, this alternate Earth still has its core consisting of 84% iron, but the other 16% contains the greatest concentrations of all known species of heavy metals...

2 answers  ·  posted 4y ago by JohnWDailey‭  ·  last activity 4y ago by JohnWDailey‭

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Q&A Anatomically correct radio communication

Could animal produce less than 700MHz radio waves to communicate ? I don't want those waves interfere with mobile phones and other intercontinental radio communication my space colonists would use....

4 answers  ·  posted 4y ago by Jean-Abdel‭  ·  last activity 4y ago by Jean-Abdel‭

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Q&A Why would human operators have to be close to the drones?

So, in this world, the future's wars are fought by drones and recruit teenagers with attitude, who control and repair drones in a temporary base near the front, and are frequently targets of surpri...

5 answers  ·  posted 4y ago by Mephistopheles‭  ·  last activity 4y ago by Mephistopheles‭

Question technology radio
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Q&A Is there anyway life could survive a nuclear apocalypse realistically?

The only such media I've seen is Fallout, which is obviously highly fantastical. I mean, they mutant animals and irradiated zombies running around! But realistically, is there anyway that life cou...

4 answers  ·  posted 4y ago by System‭  ·  last activity 4y ago by System‭

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Q&A What could make a planet more radioactive at night?

In the story of my video game, I want a group of colonists to land at dawn on an alien planet and have to terraform or build protective structures before sundown (several earth days). I want the d...

13 answers  ·  posted 4y ago by PStag‭  ·  last activity 4y ago by PStag‭

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Q&A Need a way for Earth not to detect an extrasolar civilization that has radio

The exposition is that a civilization exists about 200 light years from earth and has been capable of radio communication for several thousands of years. They are not trying to hide from detection ...

17 answers  ·  posted 6y ago by MoreOrLess‭  ·  last activity 4y ago by MoreOrLess‭

Question communication radio
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Q&A How would a Plant Phylum Bio-Ship communicate with its home planet?

One of the worlds I'm creating has a planet-wide communal sentient Biosphere (similar to Avatar). They have evolved the ability to bio-engineer whatever they need, and they have decided to send a p...

4 answers  ·  posted 4y ago by Hewholooksskyward‭  ·  last activity 4y ago by Hewholooksskyward‭

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Q&A Could a large radio telescope survive interstellar spaceflight?

I recently came across Could pulsars really act as "lighthouses" to help in interstellar travel?, asked a week ago. The author was trying to figure out if pulsars could be useful for interstellar F...

6 answers  ·  posted 5y ago by HDE 226868‭  ·  last activity 5y ago by HDE 226868‭

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Q&A How can a person without Geiger counter and modern education in physics learn the concept of radioactivity?

Imagine there are two regions, one of which has a significantly higher level of radiation. Think of Pripyat (higher level of radiation) and its surroundings (lower levels). How can a person withou...

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

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Q&A Using Polonium in a WMD

A gram of vaporized polonium can kill more than a million people and thus is the most potent poison known to Man. Having read this article, my crazy dictator immediately assembled the most experien...

9 answers  ·  posted 5y ago by MedwedianPresident‭  ·  last activity 5y ago by MedwedianPresident‭

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Q&A High energy density radioactive materials not commonly found on earth

What materials would be significantly better than currently commonly used radioactive materials (Uranium/Plutonium) for energy generation? I am looking for some material which could've been brough...

7 answers  ·  posted 5y ago by David Mulder‭  ·  last activity 5y ago by David Mulder‭

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Q&A How would an extrasolar spaceship communicate with Earth?

Given modern technology, what kind of bandwidth could you expect for communication with an extrasolar spaceship? For example, is HD video possible? Is it safe to assume it would vary by distance? O...

2 answers  ·  posted 5y ago by Brian‭  ·  last activity 5y ago by Brian‭

Question communication radio
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Q&A Is it possible to receive an echo from a radio signal in space?

I'm looking for creative people with knowledge of radio waves and space flight to help me out. I'm currently writing a screenplay about a spacecraft that is basically a radio antenna in space. The...

2 answers  ·  posted 6y ago by Kosmotheoros‭  ·  last activity 6y ago by Kosmotheoros‭

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Q&A Can I send S.O.S in space with just a conventional cellphone?

The year is 2109 C.E my friends and I were caught in a space disaster when the spacecraft we're in broke apart during a daring escape from a patrolling spacecraft. We stole an antique cellphone (fr...

19 answers  ·  posted 6y ago by user6760‭  ·  last activity 6y ago by user6760‭

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Q&A Given present-day Earth as we know it, how could I fake a radio transmission as coming from a distant star?

Setting: Western world nation, Earth as we know it, May 2016, Gregorian calendar. Eccentric billionaire, large multinational corporation or similar; lots of money, and ability to enlist the help of...

5 answers  ·  posted 6y ago by Canina‭  ·  last activity 6y ago by Canina‭

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Q&A Could there be life on a planet with high radioactive activity?

I make no assumptions to the nature of this planet. There are high chances it does not have an atmosphere or a lithosphere. But in a planet that shows a high level of radioactive activity, would it...

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

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Q&A Could a creature evolve to have a biological Geiger Counter?

I was thinking of a situation in which a creature lives in a region in which the levels of radioactivity varies from harmless to lethal from place to place and time to time. It takes millions of y...

3 answers  ·  posted 7y ago by Anders Gustafson‭  ·  last activity 7y ago by Anders Gustafson‭

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Q&A How to evolve biological radios?

Radio Thinkers Creatures that communicate by biological radio pops up in science fiction occasionally and it's a fun idea. However, there are some practical concerns with regards to evolving a ra...

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

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Q&A What would Earth have to do to "go dark"?

The US Government, and eventually the UN and all nation-states around the world, have realized they are broadcasting their existence to potential enemy civilizations in the nearby galaxy (at least ...

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