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Questions tagged [jupiter]

Questions regarding Jupiter, the 5th and largest planet in the Solar System.

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Can Jupiter's nightside be classified as spectral type Y?

As far as I am aware, the latest spectral types that have been assigned are around Y2, for objects like WISE 0855-0714 that have temperatures around 250 K or so. I've also seen several directly-imaged ...
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How long is a “lunar month” in Jupiter?

For Earth, the lunar month is well known. But Earth has only one moon. But on Jupiter, how long does it takes for the same moon configuration to appear in the "sky" of the planet? For the sake of ...
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Aren't there any rock or similar firm material on/in the gas giant planets?

Aren't there any rock or similar firm material on/in the gas giant planets? What happens if a rock asteroid hits one of these planets? Shouldn't the rock accumulate in the center of the planet due to ...
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Gravitational acceleration inside a planet

The gravitational acceleration, g, inside the Earth generally decreases with decreasing distance to the center: However, apparently for Jupiter, the gravitational acceleration only increases with ...
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Adiabatic versus convection

I am reading about the interior temperature structure of Jupiter. It says in various texts that there are regions in Jupiter's atmosphere which are well-approximated by a dry adiabatic lapse rate. ...
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Is there enough light to grow plants in the ocean of Europa?

What is the underwater temperature of Europa? I know Jupiter emits infrared light but does it emit any light able to support plant life of any type on near by Moons? Can under water volcanic activity ...
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How does the Sun orbit the Sun-Jupiter Barycenter?

I got the Orbital Elements of Jupiter around the Sun, which describe how it orbits relative to the "fix" Sun. Jupiter Semi Major Axis (AU): 5.20336301 Eccentricity: 0.04839266 Inclination to ...
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radio Jove pcb manufacturing file

Hello I want to make the radio Jove receiver whose design is available on NASA website. I don't want to purchase the receiver. I want to make it. but I don't have any knowledge about pcb design for ...
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Finding Jupiter, Saturn

I have a Dobson Omegon with a 640mm focal length and a 102mm aperture. My finderscope is broken but I can do without. I have located the planets with the naked eye but I do I do not see them through ...
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Explanation of resonance stability and instability

I'm having some trouble grasping the idea of planetary resonances due to what seems to me like an ambiguity. It is known that the asteroid main belt is sculpted by the Kirkwood gaps, corresponding to ...
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What is minimal aperture/magnification to recognize phases of Galilean moons?

Given you take a (non-amateur) refractor telescope, what are aperture and magnification required to recognize phases of the four Galilean moons? What did Galileo see: http://www.astro.umontreal.ca/~...
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Computing orbit positions of Jovian Satellites / Moons using JPL data

I've been trying to build a model of the solar system in a game. Thus far I've succeeded in placing each of the planets in position using Keplerian elements and formulae from https://ssd.jpl.nasa.gov/...
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Total rotational angular momentum estimates for Jupiter?

I wrote a quickie answer where I estimate the total rotational angular momentum of Jupiter as about 7E+38 kg m^2/s. However it bothers me because one of the sources gets this number assuming uniform ...
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How did “oddball” Valetudo, Jupiter's new prograde moon, end up in a wider orbit?

I just saw this question and that got me to this NASA page which led me to this scientific article. “Our other discovery is a real oddball and has an orbit like no other known Jovian moon,” ...
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Did we discover 10 or 12 new moons of Jupiter?

I saw multiple news sites reporting that a team discovered 12 new Jupiter's moons: c|net - Twelve new Jupiter moons found, including one reckless one Discover - Jupiter’s Got Twelve New Moons — One ...
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Is there any orbit at which the Roche limit can be “felt”?

Do any of the planets have a Roche limit that is strong enough to be felt by an astronaut whilst in orbit?
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What would be the average distance between each 1-degree latitude on Jupiter?

Do planets like Jupiter have a system of latitudes and longitudes (I believe yes)? So if yes, what purpose do they serve? Is there anything different in their purpose from Earth lat-longs? and What ...
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Fate of Jupiter when our sun dies

Five billion years from now, the sun will have grown into a red giant star, more than a hundred times larger than its current size. While this metamorphosis into the giant star will change the solar ...
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My first pictures of Jupiter

Well, I'll start off by saying I am certain I am doing it wrong! Now that I got that out of the way here is my image: I have a feeling I can't see the planet because I need a filter to block out the ...
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Helium rain inside metallic hydrogen within Jupiter, conditions and experiments?

In response to today being pi day (also see http://www.piday.org/), NASA has published it's fifth annual pi in the sky day 5 activity set (see also NASA goes the distance and Celebrate Pi Day with ...
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What would the pressure and temperature of gas be, right above Jupiter's gas/liquid boundary?

Older pages like this "Exploration of the Solar System" course page describe the transition as being a few hundred kilometers down. More recent findings seem to put the boundary deeper. See The ...
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What might the surface of Jupiter's rocky core look like? [closed]

Jupiter is posited, in some models, to have a rocky core about the size of a few Earths. If we could see through the thick gaseous atmosphere, what topographical features might we find on the rocky ...
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Would a spacecraft just go “through” a gas giant?

From my understanding of the word gas giant, it is a planet composed of entirely a gaseous atmosphere, and so planets Jupiter and onwards fall in this category. That being said, what would stop a ...
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How can tidal heating lower Io's orbit?

This answer to the question Is Io a magic energy machine? suggests that the energy from the internal heating of Io due to tidal "squishing" as it moves cyclically closer and farther from Jupiter in ...
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Jupiter vs brown dwarf star

What would happen to Jupiter if a brown dwarf star collided with it, and vice versa what would happen to the brown dwarf star?
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Planetary observations: what to expect from the Powerseeker 50AZ?

I bought the Powerseeker 50AZ, which has D=50mm; F=600mm F/12 which comes with 3 eyepieces: 20mm, 12.5mm and 4mm. As far as I can tell it's not possible to colimate this telescope. As suggested here ...
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What should I improve my telescope kit to see more details of Moon?

What should I improve my telescope kit to see more details of Moon? I have the gskyer telescope of 60mm aperture and 350mm focal length. my eyepieces are 10mm,25mm. and I have x3 Barlow. my best ...
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How was Jupiter formed

Two days ago I went to a mathematics conference where there was a paper presented on Jupiter's formation via the disk-instability model. I know that there are two different theories for the formation ...
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What's the distance between Venus and Jupiter?

What is the minimum, maximum and average distance of the Venus and Jupiter? I only found 670,130,000 km and 670,198,000 km as an average distance (here and here).
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When will the next series of mutual eclipses of Jupiter's moons begin?

When I was young (I won't tell you when) I saw one of the four Galilean moons of Jupiter suddenly disappear while watching through a small refractor. It wasn't a coincidence, I'd seen the prediction ...
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Jupiter/Saturn's fate after Sun goes red giant and planetary nebula?

The solar wind contributes a very small amount of matter to the gas giants. As the sun approaches the red giant phase, the solar wind increases significantly. 10% of the sun's mass lost as solar ...
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Are the darker blue/black areas in this picture what the atmosphere of Jupiter looks like without clouds?

This is a picture (mosaic?) of Jupiter's south pole taken by Juno (also shown below). It has gotten a lot of press, but I haven't seen anything, even in the scientific paper that accompanied its ...
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Io: Why so much sulfur?

Io is the only body in the Solar System whose crust is dominated by sulfur and its compounds. Carbon and nitrogen are also very common in the universe but we don't see them or their compounds in Io's ...
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Is it true that Jupiter protects Earth? [duplicate]

I am curious to know whether Jupiter is a reason that we have life on earth as it protects earth from comets, without Jupiter – comets would be more likely to hit us?
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Does Ganymede have a day/night cycle? If so, what does it look like?

Over on the SF & Fantasy Stack, I've asked a question about a curious watch that shows 15 intervals on its watch face instead of the usual 12 hours. That watch belongs to someone living on ...
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How much light would be reflected from Jupiter to Europa (in Europas night)?

Suppose Europa is found habitable and humans start living on it. Europa is close to Jupiter and during the night Jupiter would be reflecting light to Europa, just like our full moon reflects light to ...
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What is germane doing in the atmosphere of Jupiter?

Germane (GeH4) has been detected in the atmosphere Jupiter. Its formation from the elements seems to be thermodynamically unfavorable because its enthalpy of formation is positive and (I think) it ...
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“What was that spot in the sky?” - How to identify satellites

First of all sorry for my immense ignorance in this matter and for all the stupid things I'll say here. Yesterday, May 22th 2017, I removed the telescope from its dusty box1 and decided to watch ...
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Why could a gas planet not get much larger than Jupiter? [duplicate]

What is the maximum size for a gas giant?
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Is Jupiter's rotation slowing?

According to Wikipedia, re Europa's tidal flexing: the tidal flexing kneads Europa's interior and gives it a source of heat, possibly allowing its ocean to stay liquid while driving subsurface ...
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Is there a connection between Jupiter's orbital period and the Sun's solar cycles? [duplicate]

The cycle of solar maximums and solar minimums are each about 11 years, which is close to the orbital period of Jupiter. I thought it was a numerical coincidence, until google turned up some results ...
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Are there more images with different filters available for the April 6 Hubble image of Jupiter?

This recent HST image of Jupiter near opposition is described here and here and was made under HST proposal 14756. It was taken with WFC3/UVIS. It is made from three images using narrow-band filters ...
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A smudge near Jupiter

I was looking at the Jupiter for the first time today and I have noticed a smudge near it. Could someone explain what it is, please? I was looking online but did not find anything. So I thought that ...
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Why is Jupiter called so?

I have read before that Jupiter is named after the great Roman god because of how bright it is. I can't help but wonder, why wasn't the name given to Venus instead? Isn't Venus much brighter than ...
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How can clouds form in Jupiter's atmosphere of Hydrogen and Helium?

Here is a graphic of cloud layers of Jupiter (source: Wikipedia): There are three distinct cloud layers of ammonia, ammonium hydrosulfide, and water. The temperature and pressure conditions seem to ...
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According to my calculations Jupiter's moons do not follow Kepler's 3rd law - Why is that?

I'm asked to collect data on the orbital properties of the four Galilean satellites of Jupiter and show that they obey the same scaling as in Kepler's 3rd law. My approach for moon Io: Online, I ...
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Did the Juno mission locate Jupiter at the same precision as Saturn (4 km)?

Juno's low perijove should be great for measuring Jupiter's gravitational effect on Juno's orbit. Cassini together with VLBI has measured Saturn's location to within 4 km. Will Was Juno be able to ...
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How much mass do the volcanoes of Io erupt past escape velocity?

While trying to do some calculations to answer this quesion, I got stuck missing a crucial piece of data: I have no clue how much mass the volcanoes of Io manage to throw out of the gravity well of ...
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Does Jupiter help to protect the Earth against comets/asteroids impacts?

Does Jupiter help to protect the Earth against comets or asteroids impacts? Some astronomers believe that one reason Earth is habitable is that the gravity of Jupiter does help protect us from some ...
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If Jupiter was placed in Mars' orbit, how would Jupiter appear from the naked eye? [closed]

If Jupiter were as far from us as Mars, how big would it appear in Earth's sky? Would it appear huge, or would it be as small as a star?