Questions tagged [jupiter]

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Is the radiation on IO's surface directional?

I know that magnetospheres redirect solar radiation into the poles of a planet, but since IO is in Jupiter's magnetosphere does that mean that solar radiation is redirected across the planets surface ...
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What determines the magnitude of the atmospheric scale height of a planet?

What determines the magnitude of the atmospheric scale height of a planet? https://en.wikipedia.org/wiki/Scale_height says that: "Approximate atmospheric scale heights for selected Solar System ...
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How does Jupiter have two magnetic South poles and one magnetic North pole? Magnetic tripole?

Generation of magnetic field of Earth is relatively well-understood The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and ...
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Is Jupiter really protecting us from collisions with objects?

Many documentaries I see on the Solar System or the planets or the threat of collisions with meteorites talk about how lucky we are to have Jupiter, with its immense gravity attracting asteroids to it ...
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How much energy from the Sun could we get if we use Jupiter as a gravitational or atmospheric lens?

How much energy (watts) from sunlight could arrive to the focal point if we use Jupiter as a gravitational lens? and if we use it as an atmospheric lens by using refraction? How far the focal point ...
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1answer
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Jupiter-sized planet orbiting a white dwarf?

I read this news about a Jupiter sized planet orbiting a white dwarf. It is still puzzling to the scientists that how it remained as a single piece. NOTE: I went through the Astro.SE link given in ...
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What will be the absolute gravity of Io moon if Jupiter's gravity not in effect? Can GR explain it?

It is noted that the distance between Io moon to Jupiter planet and our Moon to Earth is nearly same. However, the ratio of gravity Earth/Moon is 80.4 times vs ratio of gravity Jupiter/Io is 20276.7. ...
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2answers
99 views

New orbit of Jupiter after the death of the Sun

When our sun finally ceases to exist as a red giant, 7 billion years from now, the outer layer of the star will get blown off in huge clouds of gas and dust known as planetary nebulae, leaving behind ...
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Why is Jupiter's ring system so faint?

Planetary ring systems are formed when asteroids, comets, or any other large objects pass too close to the planet and are torn apart by the planet's gravity [1]. Jupiter is often called the "punching ...
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380 views

Why does the shadow of Io on Jupiter look so big?

It has been reported this week[0] that the following image by Kevin Gill is the shadow of Io crossing Jupiter. Why is the shadow so large? My intuition is that Io is much smaller than Jupiter so ...
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Question on Jupiter's Core

A paper published by UC Berkley in 2010 (article about it here: https://www.sciencemag.org/news/2011/12/jupiter-eating-its-own-heart) tested what happens when magnesium oxide (one of the constituents ...
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On the Rømer experiments and the speed of light

In 1676, Rømer determined that the speed of light must be finite. His experiment consisted on observing the eclipses of Io, one of Jupiter's moons, by Jupiter itself. He timed these eclipses over a ...
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147 views

What are estimated magnetic properties of liquid metallic hydrogen?

I understand that liquid metallic hydrogen isn't easy to produce, or keep it stable on Earth, but can be liquid metallic hydrogen magnetised? Does it have magnetic properties at all?
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65 views

Jupiter & Saturn

In his prog. on Jupiter, Brian Cox stated that the complex gravitational interplay, between Jupiter & Saturn, prevented Jupiter from drifting through the Asteroid Belt, and approaching our part of ...
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98 views

How much does time-dilation effect our observance of the most massive objects in our solar system?

Disclaimer: I'm kind of a newb, so I apologize if this question is not well formed. Please comment if anything is unclear, and I will do my best to make corrections. Reading this post about time ...
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1answer
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Is metallic hydrogen an example of exciton?

I know that in exciton an electron is excited and goes from valence band to conducting band leaving an electron hole which is positively charged, soon Jupiter came into my mind and then this question. ...
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Show me how the sky is like in Jupiter (but not mars)

Assuming someone is "standing" on the "surface" of Jupiter (ok, in a stable position deep inside the gas giant's gravity field analog to standing on the surface of a rock planet) where the moons can ...
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57 views

Planetary Gravitational Pull

I have read that Jupiter and Saturn apparently have no surface. I have a hard time believing that a ball of gas can have such a strong gravitational pull without any kind of a solid surface. Can ...
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358 views

What happens if Jupiter is ignited?

I was wondering, what would happen if there was a large amount of oxygen released into Jupiter's atmosphere, than igniting it? Because Jupiter is 90% gas, therefore being a big fire waiting to happen (...
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87 views

Why is Jupiter gaseous rather than solid or liquid?

Why is Jupiter made up of gas? If the gravitational pull was strong enough would it compress to form a solid body?
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What would happen if Jupiter collided with the Sun?

This question is inspired by a similar one asked on Quora. Let's say a wizard magicked Jupiter into the Sun, with or without high velocity. What happens? The Quora question has two completely opposed ...
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1answer
192 views

Actual Jupiter seen from the place, will it looks like on the pictures?

Jupiter picture processed by one of citizen scientists Picture above is artificially proceeded by one of the citizen scientists working for NASA. It was composed from monochromatic pictures taken by ...
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4answers
264 views

Jupiter: Why is there no atmosphere at distance?

Gravitational constant: 6e-11 (meters, seconds, and kg). Jupiter radius: ~ 69,000,000 meters (google) Jupiter mass: $2*10^{27}$. 1 kg, at Jupiter's radius, experiences ~100N of force: $$ F = G *...
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Jupiter's formation

Two days ago i went to a mathematics conference where there was a paper presented on Jupiter's formation via disk-instability model. I know that there are two different theories for the formation ...
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107 views

Is there a distinct size limit between planet and star?

This question was inspired by: This recent article about an exoplanet "10 times the size of Jupiter" Prof. David Taylor's website about the "Life and Death of Stars" (in particular, the first page's ...
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1k views

Gravity on the surface of Io

Something about this seems a little incorrect to me but I can't quite put my finger on it. The moon closest to Jupiter is Io, with a diameter of $3650$ km and a mass of $8.93 \times 10^{22}$ kg, and ...
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Could a planet with a strong magnetic field exert a diamagnetic force on an orbiting moon?

Here is a question from the world building stack exchange. https://worldbuilding.stackexchange.com/questions/79003/making-a-slow-orbit-around-a-large-gas-giant Requested: a means to have a moon of ...
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200 views

Let's make Jupiter a star

It is known that Jupiter is mostly made of hydrogen, but that it is not massive enough to start nuclear fusion. In other words, Jupiter is not a star, but could be a star if someone added hydrogen to ...
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2answers
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How many arcseconds the light of a star unfolds in the vicinity of jupiter?

One of the main demonstrations made to test the theory of relativity were the images of the solar eclipse of May 26, 1919, (causing a shift in the positions observed in celestial coordinates of its ...
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How much more mass would Jupiter have to accrete to start fusion? [duplicate]

How long would it take? Is it likely in the life of our sun?
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289 views

Have we measured the rate at which Jupiter is shrinking?

On most websites that I looked at, it says Jupiter is shrinking 2cm/year (for example wikipedia and Quora). However neither of these website say whether this rate is measurable (the latter says it is ...
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172 views

Effect of gravity on inhabitants floating in the Jupiter atmosphere

In several science fiction mythologies, humans live in artificial habitats in the Jovian atmosphere (Piers Anthony's "Bio of a Space Tyrant" and Ian M Banks "the Algebraist" for example). Assuming a ...
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1answer
337 views

Shoemaker-Levy 9 impact on Jupiter

When the comet Shoemaker-Levy 9 impacted with Jupiter it created a ball of fire 3000 Km high and it left a mark on the surface of the planet that was visible for weeks (source: Wikipedia). How was the ...
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How can the orbit of Jupiter's moons be used to calculate the speed of light? [duplicate]

How can the orbit of Jupiter's moons be used to calculate the speed of light? It seems this was one of the first methods and goes back to 1656.
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How we are able to see Jupiter?

As everybody knows Jupiter is made up of gases and these gases mainly contain hydrogen and helium. Since light passes through gases and does not reflect when shining on them, how we are able to see ...
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372 views

If planet like Jupiter is massive enough to hold hydrogen with its gravity is it bound to become a star?

I have been reading about Jupiter as of late and reason I am asking is if Jupiter has strong enough gravity to pull hydrogen to itself then it should be only matter of time when it will acquire enough ...
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111 views

Light speed measured by observing Jupiter moons [duplicate]

The famous discovery that the light has speed measures the times of the immersion and emergence of Io, one of Jupiter's moons. However, I still can't comprehend this. Even when the Earth is further ...
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How can a gas giant be about the same size but six times more massive than Jupiter?

I've just read this article: http://www.sci-news.com/astronomy/science-kepler-432b-new-super-jupiter-exoplanet-02490.html And I wondered how this could be possible? Maybe it's because this gas giant ...
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4k views

Why do the storms of Jupiter have long life unlike that of Earth?

Recently I saw How the Universe Works. In one of the episodes, concerning Jupiter, they told that the storms on Jupiter can survive many, many, times longer than those on Earth. What is the reason ...
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Questions regarding the feasibility of “Jupiter”-like fusion reactor

I was reading this post from this website: Turning Jupiter into a star It basically talks about whether fusion can or does happen in the core of Jupiter. I know Jupiter cannot become a star, but I ...
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How did they take photos of Jupiter?

How did they take photos of Jupiter - I mean Jupiter is illuminated and that's a lot of light to produce. Am I missing something, and there was some sort of dark photo technology used, or was there ...
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6k views

Would atmosphere of Jupiter blow up if I launched a atomic bomb there? [duplicate]

This is based upon an question I had, since in Jupiter there is no oxygen a simple fire cannot be started let alone even happen due to its temperature. Anyway that being said, If I somehow used a ...
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1k views

Why is the orbital resonance of the Galilean moons stable?

It is well known that the orbits of Ganymede, Europa and Io are in a 4:2:1 resonance. Most online sources (including but not limited to Wikipedia) say that such an orbital resonance, along with the 3:...
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466 views

Jupiter radiation belt: where >MeV particles comes from?

When I read some discussion about exploration of Jupiter moons, or possibility of life there, a common argument is high dose of radiation in Jupiter's radiation belt (several orders of magnitude ...
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339 views

Gas giant evolution over lifetime

In various types of stars, one can learn how they evolve differently, depending on factors such as their size and chemistry. Some stars have a short lifetime and others much longer. But, what is ...
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518 views

Rømer's determination of the speed of light

I am trying to understand Rømer's determination of the speed of light ($c$). The geometry of the situation is shown in the image below. The determination involves measuring apparent fluctuations in ...
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9k views

What would be the effects if Jupiter was to blow up?

So, in one science fiction story, that tries to be as realistic as possible apart from a few space magics, humanity has a contingency plan to blow up Jupiter. As in, totally destroy it in one massive ...
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How deep is the Great Red Spot?

The Great Red Spot (GRS) is a very persistent storm system that's easily visible through a telescope on the surface of Jupiter. But what is the three-dimensional structure of the GRS, and how deep ...
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Jupiter Core is Solid Hydrogen

I was watching a show on the science channel about gas giants; there is something I do not understand. I am not a scientist, so this may be obvious to some. I learned that there a three states of an ...
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What would be the characteristics of Jupiter if it shrank?

So, I've heard from various works of science fiction about the prospect of turning Jupiter into a star. From what I know about the physics of such a task, it would require somehow condensing Jupiter ...