Questions tagged [jupiter]

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

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Where can I get a step by step guide to use CASA for obtaining a radio image of a planet like say Jupiter?

I intend to use CASA for processing ALMA data for Jupiter and obtain a proper radio image for Jupiter. However, is there any specific step by step guide for the same just as is the following for TW ...
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2 votes
1 answer
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Are there areas within Jupiter's magnetosphere without powerful radiation?

I know Jupiter has powerful radiation belts, but I'm wondering if there are places within the magnetosphere that are relatively calm. I'm asking about Jupiter (a gas giant we know) because I'm curious ...
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8 votes
3 answers
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Planets looks like normal stars when I see them using telescope

I've been trying to see planets using my 114 mm (aperture) f=900 mm telescope. For the moon, I got very good quality pictures, but when I try to see planets they just appear to be as if I'm looking at ...
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2 votes
1 answer
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How and where can I get the continuum and/or FITS data for Jupiter and Saturn from ALMA, GMRT and VLA Telescopes?

I intend to process and analyze the radio images and emissions from Jupiter and Saturn. I wish to get data from ALMA, GMRT and VLA Telescopes. Requesting you to please guide me as to how do I access ...
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2 votes
1 answer
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Will Jupiter's days speed up?

Jupiter has so many moons, and those moons have a gravitational pull on it. Does that mean, that over time, the length of Jupiter's days will get shorter?
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If Earth was a moon of Jupiter orbiting at the same distance as Metis (Jupiter's innermost moon), then how much lighter would a 100 kg person feel?

Metis is Jupiter's innermost moon, orbiting at a semi-major axis of 128,000 km. If Earth were to magically replace Metis, then how much lighter would a human weighing 100 kg be? There's no need to ...
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18 votes
3 answers
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What is this 877-year cycle in the orbits of Jupiter & Saturn, and this multimillion-year cycle in the lunar orbit?

The book The Theory That Would Not Die (by Sharon Bertsch McGrayne, 2011) states the following on page 28: He [Pierre-Simon Laplace] used other methods between 1785 and 1788 to determine that Jupiter ...
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The orbital period of Jupiter and Europa billions of years later

We know that the Sun gets so big billions of years later and the Earth will get destroyed. What will the orbital period of Jupiter (Sun-Jupiter system) and its moon Europa (Jupiter-Europa system) be ...
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2 votes
1 answer
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Can you distinguish a transit from an eclipse when observing Galilean moons?

If I look at Jupiter through a small telescope (or binoculars) while Io is overlapping Jupiter, is it possible for me to visually distinguish a transit from an occultation? For example, maybe there's ...
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1 vote
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Can I use 75mm Plano convex lens to build telescope [closed]

I want to see Jupiter with moon. So am planning to build telescope. Can I use 75mm Plano convex lens with 1000mm focal length?
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6 votes
2 answers
199 views

Can Jupiter's rings be seen with the naked eye by an astronaut nearby? How difficult would it be?

Maybe a basic question, apologies. I understand that there would be different answers depending on how far is "nearby", depending on how inclined our orbit is, and what is our alignment with ...
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What is Jupiter's apparent magnitude as watched from Uranus?

Saturn's apparent magnitude from Uranus is +3.228. Jupiter orbits closer to the sun than Saturn. Can we therefore expect Jupiter’s apparent magnitude from Uranus to be dimmer than Saturn's, or is it ...
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The Kuiper Belt and Oort cloud [closed]

How come the comets and asteroids in the Kuiper belt and Oort cloud are kept in a gravitational field and they don't get pushed and pulled by the planets around them? I get why comets in the Oort ...
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1 vote
1 answer
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Would a Jovian calendar be based on the Jovian sidereal year or tropical year? [closed]

According to many places online, Jupiter's tiny axial tilt makes it have no seasons, and its huge size eliminates any variance possible due to its orbital eccentricity. All these considered, what ...
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How long is a mean Jovian tropical year in Jovian solar days?

Many sources say that Jupiter's year lasts 10,475.8 Jovian days. When I calculated to see if that's correct With the data NASA had published, I found out it's the measurement of a Jovian sidereal year....
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12 votes
2 answers
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Is Jupiter warming the Earth? (Earth, Sun Jupiter system)

If Sun-Jupiter baricentre is outside the Sun, does that mean the Sun is orbiting around that point too right? Then the Sun shouldn't be nearer to the Earth at some point during the Sun-Jupiter orbit (...
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If Jupiter's day length increased from the current 9 hours to 100 hours, would the weather become more or less violent?

Would average windspeeds increase or decrease if day length increased substantially on Jupiter? Is windspeed in Jupiter's atmosphere primarily driven by solar energy differentials between night and ...
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2 votes
1 answer
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Jupiter's asteroid-like moons and planetary-systems around sub-brown dwarfs

Is it likely that any of Jupiter's small moons were formed in orbit around Jupiter or are they all captured asteroids? I thought of this question because I wondered whether the planetary-system of a ...
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26 votes
3 answers
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Is Jupiter's Red Spot "locked in place" or does it move around?

A person could be forgiven when looking at Jupiter's Red Spot storm for concluding that it doesn't move. That it's geologically locked in place. But is it? I know it's a stretch to use the phrase &...
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How big can a planet get, with respect to its star for it to sustain life? [closed]

Earth is 108 times smaller than the sun in terms of its diameter while Jupiter is 10 times. Assuming Jupiter was located such that it could sustain life, theoretically how big a planet can get with ...
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1 answer
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How much real time was compressed into this 10 second long timelapse Hubble video of Jupiter's aurora?

The HubbleESA video Timelapse of Jupiter’s auroras is discussed in the ESAHubble page Timelapse of Jupiter’s auroras and includes the identifier heic1613a. However ...
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Are these Jupiter's moons?

Sorry for the huge picture), anyway, as you can see, there are 2 specks of light on either side of the upper planet which is likely Jupiter as the lower one is clearly Saturn-shaped. I was going ...
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15 votes
4 answers
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Why doesn't the Sun wobble towards Jupiter instead of away from Jupiter?

This is the page I am referring to. It seems counterintuitive to me that the Sun should be on the opposite side of the barycenter's wobble. I realize I am wrong, but I cannot see why I am wrong. Can ...
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Why does the solar analemma have a strange shape on Jupiter?

I'm trying to look at what the solar analemma looks like from different planets, using Stellarium. To plot the analemma, I go into the ephemeris tab of the astronomical calculations window. From there,...
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Maximum and minimum masses and sizes of giant planets?

What are the minimum & maximum masses and diameters of giant planets? Minimum end of the scale Earth has mass of 1 Earth mass and a mean radius of 6,371.0 kilometers, and thus a mean diameter of ...
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6 votes
1 answer
494 views

Requirements to resolve position of Jovian Whistlers up to magnitude of Red Spot with amateur radio equipment?

Can I sense a bright star pointing an eight foot antenna towards it? is a while ago, but the discussion about this question I found very interesting. Please forgive me that I am not an expert in ...
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3 votes
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What are the typical emissions of Jupiter's Aurorae?

I'm looking for some solid measurements of the full range of emissions from the Aurorae on Jupiter. I've found partial sets of data in the past which are most easily summarized here. As you can see, ...
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3 votes
1 answer
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Is GAIA the only game in town for looking at quadrupole gravitational deflection of light?

From Gerry Gilmore (2018) Gaia: 3-dimensional census of the Milky Way Galaxy 4.4 Fundamental physics Relativistic effects are highly significant for Gaia measurement accuracy, with tests of General ...
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2 votes
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I have a scientific paper on gravity, how do I publish it, and will my research benefit me? [closed]

I read a lot about gravity and discovered a hole in it, and I want to publish that hole, but I am not good at mathematics. To show that gap, what should I do? Should I use Newton's equations which are ...
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How big and how far away would the moon be if earth was the size of Jupiter?

If the earth were the size of Jupiter, what would its 'moon' be in both relative size and distance? I did some quick figuring and think I roughly figured out that if placed at the position of the sun, ...
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1 vote
2 answers
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If jupiter was the densest planet on the solar system with low volume, could it be a star without multiplying its mass 80 times?

Astronomers or Scientists say that Jupiter's Mass would have to be multiplied 80 times to become a star (M Mass). What if Jupiter was denser, would there be thermonuclear energy because of the density?...
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2 votes
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How big can an object get before its core becomes degenerate?

I am wondering, what is the most massive object we know of that does not have a degenerate core, and what is the least massive object that does have a degenerate code? We know that Jupiter has a core ...
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2 votes
1 answer
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What will a future cold and "dead" Jupiter look like? [duplicate]

I heard Jupiter is dying like getting smaller. For example, from Guillot et al. 2004 3: The Interior of Jupiter (also here): (Jupiter)... is still contracting at the rate of ~3 cm per year while its ...
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5 votes
2 answers
187 views

Solar wind, Earth wind and planetary winds?

In February 2021, a new form of "electrified gas breeze" was announced, see blog by Tony Phillips entitled A New Form of Space Weather: Earth Wind which might a possible explanation for ...
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1 vote
1 answer
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How fast do the poles of Jupiter and Saturn precess?

As Jupiter and Saturn have very fast rotation periods, about 10 and 11 hours, respectively, I am assuming that their poles will precess much faster then Earth. Since Earth's poles precess every 26000 ...
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3 votes
0 answers
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Measured values of the solar irradiance at other values than 1 AU?

It is straight forward to estimate the total solar irradiance of a planet using the Earth's solar constant, and scaling it according to the (mean) distance of the planets. But for which planets have ...
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3 votes
1 answer
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How much solar energy concentrates at Jupiter's focal point via gravitational lensing?

How much solar energy concentrates at Jupiter's focal point via gravitational lensing?
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7 votes
1 answer
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What calculations show that Comet Shoemaker-Levy 9 orbited Jupiter for several decades before its spectacular impact? (Chodas, Sekanina & Yeomans)

This answer to A moon in eccentric orbit dipping below Roche limit includes the following about Comet Shoemaker–Levy 9 Here is a nice figure of its last passes: I looked up "fragment A" in ...
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4 votes
0 answers
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Time evolution data of the Great Red Spot on Jupiter?

Jupiter's Great Red Spot fascinates scientists for ages, so it does me. Where can I find a table (e.g. as CSV-file) with the time evolution of longitude, latitude, horizontal and vertical extension of ...
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6 votes
1 answer
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When will Callisto be in orbital resonance with the rest of Jupiter's big moons?

The four Gallilean moons of Jupiter (from innermost) are Io, Europa, Ganymede, and Callisto. Io, Europa, and Ganymede are in a 1:2:4 orbital resonance. Callisto's orbital period is 16.689 days, which ...
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6 votes
1 answer
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If Jupiter and Saturn were considered stars, which of their moons would qualify as planets by 'clearing the neighbourhood'?

Jupiter has four and Saturn seven spherical satellites. Jupiter's moon Ganymede and Saturn's Titan are larger than Mercury and they're the most massive moons at 0.0248 M♁ (Ganymede) and 0.0225 M♁ (...
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1 vote
2 answers
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If we stood on the surface of a Jovian moon, Saturn would appear as a dot. Why doesn't Saturn appear like this in a telescope?

Images from the conjunction like these show Saturn just a bit smaller than Jupiter. However, if you were in the vicinity of Jupiter, Saturn would still appear as a dot to the naked eye, wouldn't it? ...
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1 vote
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Meteor size and frequency distribution for Earth vs. moon or other planets?

I struggle to find an answer to the at-first-sight simple question if or how the size distribution and frequency distribution of incoming rocks hitting the ground or the atmosphere vary from Earth, to ...
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How is it that Jupiter and Saturn appear the same size in the sky?

Saturn is twice as far as Jupiter is from Earth according to a quick Google search. But I needed to understand why do they appear as if they are the same size. I mean as if they are not far apart. For ...
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1 vote
0 answers
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Question about telescope eyepieces

I have a Celestron 60LCM refractor telescope. It has a 60mm aperture and a 700mm focal length. It came with two eyepieces. One is 25mm and the other is 9mm. They are marked only with their focal ...
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2 votes
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The electron–cyclotron maser emissions from Earth

The first-ever detection of radio signals caused by the electron–cyclotron maser mechanism outside of the Solar System, on Tau Bootis b was recently published (here). This phenomenon causes huge radio ...
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4 votes
2 answers
293 views

Will I be able to see both Jupiter and Saturn at the same time in my Astromaster 114?

I have a Celestron Astromaster 114 Newtonian reflector telescope. The specs: aperture: 114mm focal length: 1000mm focal ratio: f/8.77 I also have a t-ring so I can connect a Nikon camera to it. Will ...
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5 votes
1 answer
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Are the Jupiter-Saturn conjunctions and winter solstice related?

There is conjunction of Jupiter and Saturn on Dec 21. And there is another celestial event on that day the winter solstice. So I'm just wondering that are these two events are related or not?
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5 votes
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Lightning in Jupiter's "string of pearls?"

Is there any reason there couldn't be lightning in the storms that make up Jupiter's "string of pearls?" Addendum:I'm writing a science fiction novel, with a ship passing by Jupiter and ...
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5 votes
2 answers
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Why do Jupiter impact events look dark brown?

When a large asteroid impacts a rocky planet, the impact area becomes molten, looking red. However, when an asteroid or other large object impacts a gas giant, like Jupiter, the impact area turns dark ...
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