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Rigorous Science

Posts tagged astronomy

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Q&A What type of black hole/rip in the universe would swallow the solar system within 1-10-100 years?

If an FTL experiment created a black hole or keugleblitz within 100 au or less of our sun, what would it's post creation statistics have to be to consume the majority of our solar system within 10 ...

1 answer  ·  posted 6y ago by PCSgtL‭  ·  last activity 6y ago by PCSgtL‭

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Rigorous Science No More Looking from the Same Side of a Mostly Liquid Surface Terrestrial-based Moon

Section 1: Non-Duplicate Proofs. Section 2: Background, THE QUESTION, and Useful Info. Section 3: Other cited ways of preventing. Section 4: Sources and Additional Resources. Section 5: TL;D...

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

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Q&A How would tidal forces impact two habitable moons in a horseshoe orbit?

I saw this video a while ago, and recently it's gotten me thinking. Towards the end of Artifexian's video on gas giants and habitable moons, he mentions the idea of having 2 habitable moons in a ho...

1 answer  ·  posted 6y ago by Lot-Of-Malarkey‭  ·  last activity 6y ago by Lot-Of-Malarkey‭

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Q&A That's a big planet, but how big is it?

If a tidal locked terrestrial sized moon with 0 eccentricity, 0 incline, and was orbiting .01 AU away from a gas giant with 12 Jupiter masses (which would have approximately the same radius as Jupi...

1 answer  ·  posted 6y ago by LanceLercher‭  ·  last activity 6y ago by LanceLercher‭

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Q&A Spinning in place, or spinning in space?

Is there any feasible way for a satellite to have a long lasting higher spin orbit resonance than 1:1 (tidal locking) BESIDES having an eccentric orbit, having its own satellite, or being severely ...

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

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Q&A How Would It Feel To Walk On A Rocheworld?

A while back I saw this video talking about the habitability of double planets and Rocheworlds. I haven't seen any questions about the latter case here, so I decided to take a swing at it. For so...

1 answer  ·  posted 6y ago by Lot-Of-Malarkey‭  ·  last activity 6y ago by Lot-Of-Malarkey‭

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Q&A How would it feel to sail a Rocheworld ocean?

A couple days ago, I posted this question about what it would feel like to walk on a Rocheworld. For some background, a Rocheworld is a double planet system where the two planets are so close toge...

3 answers  ·  posted 6y ago by Lot-Of-Malarkey‭  ·  last activity 6y ago by Lot-Of-Malarkey‭

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Q&A Could A Torus World Have Rings?

Towards the end of this article (https://io9.gizmodo.com/what-would-the-earth-be-like-if-it-was-the-shape-of-a-d-1515700296) there is mention of the different kinds of orbits the moon of a Torus wo...

1 answer  ·  posted 6y ago by Lot-Of-Malarkey‭  ·  last activity 6y ago by Lot-Of-Malarkey‭

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Q&A Could pulsars really act as "lighthouses" to help in interstellar travel?

I was reading an article that said pulsars could be used in the far future, by travelers, by acting as "lighthouses" in space and aiding in interstellar travel. In a galaxy wide civilization, would...

1 answer  ·  posted 6y ago by user73829‭  ·  last activity 6y ago by user73829‭

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Rigorous Science Close the door on your way out - Life lit by a blue dwarf star

I'm seeking a hard science setting for a piece of xenofiction with a decidedly non-sciencey feel. That said, there is no magic or magic technology. The idea is as follows: A red dwarf star has a...

6 answers  ·  posted 8y ago by rumguff‭  ·  last activity 6y ago by rumguff‭

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Q&A What If Earth Had an Equatorial Ridge

Saturnian moons Iapetus, Atlas, and Pan all have equatorial ridges. There's a few explanations as to why, but the theory behind why Iapetus has one is what intrigues me. (https://en.m.wikipedia.org...

1 answer  ·  posted 6y ago by Lot-Of-Malarkey‭  ·  last activity 6y ago by Lot-Of-Malarkey‭

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Q&A With an extra bright moon hanging above us, would stars still be visible in the night skies?

The moon seems gigantic and is extremely bright. The planet BlinketyBlink has a mass of 1.6 Earth masses and a single large moon which orbits it at about 240 000 miles/386 242 km. The moon Toten...

4 answers  ·  posted 6y ago by shieldedtulip‭  ·  last activity 6y ago by shieldedtulip‭

Question astronomy
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Q&A Can a dual planet have an orbit around the Sun similar to Earth's?

This is a sequel to my previous question How big could a moon be before its orbit became too unstable or tidally locked to its planet OK, let's imagine that the thing everyone thought was a moon w...

4 answers  ·  posted 6y ago by shieldedtulip‭  ·  last activity 6y ago by shieldedtulip‭

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Q&A How big could a moon be before its orbit became too unstable or tidally locked to its planet

How big could a moon be before its orbit became too unstable or tidally locked to a planet about 1.6 times larger than Earth. Planet BlinketyBlink is on a similar orbit (to that of earth's) aroun...

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

Question astronomy
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Q&A What would the night sky look like from Luna (Earth's moon)?

Prima walked out to the observatory's main deck. There, as she had expected, Secunda was sitting in the grass, looking up at the stars. "Pretty, isn't it?" said Secunda, as she craned her n...

4 answers  ·  posted 6y ago by Corbin‭  ·  last activity 6y ago by Corbin‭

Question astronomy moons earth
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Q&A How much time will this system last?

Imagine the following star system: The star is very much like ours. Orbiting this star is one planet, very much like Earth. Let's call it the Orb. Orbiting the Orb are two moons: a large one, Mon...

1 answer  ·  posted 6y ago by No Name‭  ·  last activity 6y ago by No Name‭

Question astronomy
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Q&A Is It Possible to Establish a Human Colony in a Flare Star System?

I am thinking about using Groombridge 1618 as a setting for my world. It is a main sequence star of spectral type K7.5 Ve, 67% of the Sun's mass. The habitable zone is at a radius of 0.26"“0.56 AU...

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

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Q&A How could Earth be propelled into a further orbit?

In my story, technologically advanced aliens create a "white hole" at the center of the sun that constantly spits out matter (hydrogen) from a parallel universe, increasing the star's mass quickly....

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

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Q&A What would it look like for a planet with two moons and rings during a double eclipse?

Since we just had an eclipse, I began to think: what would it look like if a planet had rings and two moons? Now, there are two solar eclipses going on at the same time! What would the sky look l...

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

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Q&A Possibility of a large as of yet undetected object headed to intercept our solar system

In my setting I want to destroy the world in a way where people have: Plenty of notice of the impending demise No chance of stopping it They can't engineer a way to survive on earth The rest of t...

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

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Q&A Can a dedicated amateur astronomer spot a rogue asteroid?

Meet Joe. Joe is generally an average person with one special trait: He loves astronomy and star gazing. However, Joe has a great paying job as a web developer. He earns 120 000 USD yearly and has...

5 answers  ·  posted 6y ago by Pavel Janicek‭  ·  last activity 6y ago by Pavel Janicek‭

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Q&A Is it possible for an asteroid belt to form around a sun?

Is it possible for an asteroid belt to form around a sun? Think of our asteroid belt, but instead of where it is now, it would be where Mercury is. Also, and I didn't have enough room to put th...

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

Question astronomy
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Q&A Biological Spaceships - Possible?

My source of inspiration and imagination... StarGate Atlantis Tv-Series: Wraith hive-ships were mainly biological. Genesis Rising Pc-game: The game itself, storyline, human technology, etc based ar...

5 answers  ·  posted 9y ago by Tim‭  ·  last activity 6y ago by Tim‭

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Q&A How would a noble gas lake form on an earth-like world?

Pretty much the title. I was thinking that it could have originated from a meteorite impact. I think that there are meteors that are made of frozen noble gases, so that would be the source of the "...

1 answer  ·  posted 6y ago by user13904‭  ·  last activity 6y ago by user13904‭

Question astronomy geography
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Rigorous Science Can stars that are not powered by nuclear fusion exist?

Stars generate their energy by fusing lighter elements into heavier elements. The most common reaction in Sun-like stars is the conversion of hydrogen to helium via the proton-proton chain, but hea...

16 answers  ·  posted 8y ago by HDE 226868‭  ·  last activity 6y ago by HDE 226868‭

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Q&A Feasibility and challenges of a kingdom existing within an eternal night?

Okay, so admittedly I was going for a title that was a bit more catchy than the actual question, but not by much. On a technical level, the real question is "Feasibility and challenges of why a la...

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

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Q&A How to blow up a star by accident?

I have this race of space-dwarves and I need to make them homeless due to technological hubris of some kind: for plot reasons. I think that if they were to attempt to build some kind of Dyson sphe...

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

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Q&A Effect of impact of a pure gas comet?

I'm not even sure if gas comets can exist naturally -- feel free to comment on that in the answers. But assume that somehow a large block of frozen hydrogen/helium/oxygen/nitrogen is tumbling throu...

4 answers  ·  posted 7y ago by SRM‭  ·  last activity 6y ago by SRM‭

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Q&A How would a torus world (donut shaped) have to rotate in order to have a stable day / night cycle in all of its regions?

In this universe, mass and gravity work differently so stable torus planets are possible (donut shaped). How would a torus world orbiting a single star have to rotate in order to have a stable da...

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

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Q&A Radiation from binary star systems and how that would affect a planet orbiting both stars

I am working on a solar system for a world where I intend to place my stories. This world should work by the laws of physics as we understand them so that, even though magic is a thing that exists ...

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

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Q&A Human colony on distant planet system with very short day-night cycles

I need a planet where the day cycle is short, in particular 16 hours. I read What determines the length of a day on a planet? and Is it physically possible for a planet to have seasons of different...

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

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Q&A Would living underground during an impact winter be ideal?

I was looking at these two questions: Expanding Occupied Underground Habitations Safely Does Living without access to Sunlight have known Physical/Psychological effects? And in a story I'm writi...

4 answers  ·  posted 9y ago by KaguraRap‭  ·  last activity 7y ago by KaguraRap‭

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Rigorous Science How would a neutron star affect the habitability of planets orbiting a companion star?

A star system consisting of two stars forms, with one being more massive. As such, the larger star soon exhausts its fuel and ends up as a neutron star. The secondary star has a semi-major axis of ...

4 answers  ·  posted 7y ago by Dark Martin‭  ·  last activity 7y ago by Dark Martin‭

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Q&A What would happen if a planet was surrounded by an unusually large amount of dark matter/energy?

Let's say we have a planetary system that has somehow attracted an unusually high amount of dark matter and dark energy. We can hand-wave the physics and any impossibilities behind the method of th...

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

Question astronomy
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Q&A Can you replace a sun with a burning moon?

In our solar system light and heat are, of course, provided by the sun. I was wondering if a comparable effect might be had by positing a burning moon instead? So rather than a true star, you'd hav...

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

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Q&A Antimatter Explosion Signature

The DoomFleet returns! And this time, it's with a more "Conventional" weapon - That is, projectiles with an antimatter core. Ultra-simple explanation is they have a "small" amount of antimatter in...

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

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Q&A Could a habitable tidally locked planet have a day and night cycle caused by the eccentricity of its orbit?

I'm trying to think of ways that a habitable tidally locked planet could have something that resembles a day/night cycle. Shadows caused by any moons being out of the question. Hypothetically, cou...

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

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Q&A How extreme can I make an altered solar cycle without destroying an inhabited world?

This is a follow-up to an earlier question. My intent here is to work out the details, and explore the potential consequences, of one of the many excellent answers I received. Relevant questions ha...

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

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Q&A Is it possible to have a sun with visible phases or cycles?

Is there a scientifically plausible way for a habitable world to have a sun that undergoes a regular, dramatic, and easily observable change? One comparable in visual impact to an event like a sola...

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

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Q&A Is this circumbinary planet set up in a stable manner?

This is the ideal set up for my solar system: EDIT It's been pointed out that this is not a stable set up, so I want to clarify that everything in this set up can be changed at will to fit my plan...

1 answer  ·  posted 7y ago by Zac Walton‭  ·  last activity 7y ago by Zac Walton‭

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Q&A What is the habitable zone around my star?

I have built a star that is loosely based on a real-world star. It has the following properties: Spectral class G Mass: 1.03 M$_\odot$ Radius: 1.02 r$_\odot$ Luminosity: 1.05 L$_\odot$ Surface te...

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

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Q&A "Night" sky between galaxies

Say we're on a ship traveling between the Milky Way and Andromeda. We decide to stop and take a look out our space-windows. What do we see? I'm presuming that the Milky Way and Andromeda would bo...

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

Question astronomy
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Q&A Would life on the edge of the Sagittarius Dwarf Spheroidal Galaxy see the whole Milky Way in the night sky?

Here's an intriguing thought - I think so anyway. Let's suppose for a minute that there's an Earth-like planet with sentient life orbiting a star near the edge of the Sagittarius Dwarf Spheroidal G...

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

Question astronomy
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Q&A Swapping the sunny side of tidally locked planet

For story reasons I need a situation with a planet around red dwarf, which already has had the equivalent of a Great Oxygenation Event. Simultaneously I also like the planet to be mostly without ac...

3 answers  ·  posted 7y ago by Shadow1024‭  ·  last activity 7y ago by Shadow1024‭

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Q&A Does Earth's direction of rotation affect day length?

Let's say Earth started rotation in the opposite direction without any catastrophic events, would a day on Earth be shorter or longer or just the same considering that speed of rotation and revolut...

2 answers  ·  posted 7y ago by Michelle Brownstone‭  ·  last activity 7y ago by Michelle Brownstone‭

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Q&A How would our sky look like 100 million years in the future?

Right, you are standing on Earth 100 million years in the future and observing the sky. What would you see during night and how would a day look like when you look up. Weather is not relevant (no c...

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

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Q&A What would the star chart be like if earth had a ring?

Recently, I've seen those pictures showing what Earth would be like if it had rings, and that made me wonder, what would the sky map be like? This ring would appear as a fixed object (pretty much a...

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

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Q&A How would early astronomers prove the existence of a spherical firmanent around the Earth?

Someone made the Earth. They placed man on the surface and gave them plants, animals, the waters, and the mountains to make their life compete. The Earth exists within a spherical firmament upon ...

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

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Q&A Could life exist in a circumstellar disk?

I could have sworn that there was a question that covered this, but I suppose I'm misremembering. If anyone finds one, let me know. Back in the early days of the Solar System, things were pretty b...

1 answer  ·  posted 8y ago by HDE 226868‭  ·  last activity 7y ago by HDE 226868‭

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Q&A Can I keep our universe, but without the speed limit (of light)?

It seems like nothing can move faster than light and this is quite bothersome for interstellar travel. It takes decades in the best case to get anywhere interesting in our little Milkyway (Many tho...

14 answers  ·  posted 9y ago by overactor‭  ·  last activity 7y ago by overactor‭