Questions tagged [solar-system]
Questions regarding the Sun and objects orbiting it.
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The search for Planet X [closed]
Could Planet X actually be just the dark matter of our solar system creating a central point that causes the planets orbits to change slightly. Just a weird taught I had, I didn't expect an answer ...
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Do jets from gamma ray bursters and quasars cause gas clouds to collapse just as supernovae are postulated to do?
A supernova may have caused a gas cloud to collapse and form our solar system .But can jets from quasars and gamma ray bursters also cause gas clouds to collapse ?
user56626
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What happens to planets as they cross the Galactic equator?
We know from research that the Solar System travels around the Galactic plane, and sometimes (periodically) dips below the Galactic equator, only to return and dip back above the Galactic equator ...
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Carbon dioxide on terrestrial planets
I guess it's a basic question, but why do Venus and Mars have so much carbon dioxide in their atmospheres? The vast majority of the universe is hydrogen (and a small percentage is helium). Why did the ...
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Grand Tack Hypothesis and Nice model
The two models describe the evolution of the solar system at different timescales, but both result in the current location of Jupiter. Are they compatible with eachother? Could the Grand Tack be the ...
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How close will Pluto come to Earth this year (2024)?
For reasons associated with a 1943 story, I am keen to find how close Earth will come to Pluto in 2024. According to https://theskylive.com/pluto-tracker today (21-May-2024), Pluto is now slowly ...
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Easy guideline for using JPL Horizons DE431 for planets in aphelion and perihelion from 11000 BC to 16000 AD?
Can someone give me a step by step Guide how to use JPL DE431 or DE441 as a Beginner.
I tried the Horizons website app and Webgeocalc but it didn't showed understandable Information.
This websites ...
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What is the difference between a solar eclipse's (a) magnitude and the (b) moon/sun size ratio?
After watching a Smarter Every Day 2 YouTube video featuring Gordon Telepun, I purchased his ebook Eclipse Day 2024 and More off the Google Play store. In the book, he has a link to Xavier Jubier’s ...
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Gear trains of astronomical clocks available?
I have been modelling gear trains of astronomical clocks (e.g., Antikythera, Eise Eisinga Planetarium, Prague Orloj, Ancient Maya Solar System).
I am now looking for gear trains of other famous ...
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What causes the short term variation in the length of a march-equinox year
By a "march-equinox year" I mean the time between successive march/vernal equinoxes. I understand that this is different from the mean tropical year, and I also understand why this would be ...
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What are the technologies needed to make deep space LIDAR competitive with RADAR? Any plans for tests, prototypes or "pathfinder" systems?
ProfRob's answer to Would it be practical to map out the Kuiper Belt and Oort Cloud via Radar? gives us a "sobriety check" on the idea. Citing an example of a 1 million watt transmitter at ...
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Range for Radius and Mass of Solar bodies
I'm trying to build a table with the Min and Max Radius and Mass of Solar bodies. In order to get data to be able to random generate other solar systems. This is a basic exercise, I'm pulling data ...
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How can I calculate the geocentric longitude of Pluto in a similar way to VSOP87's algorithm?
The book "Astronomical Algorithms" teaches a way to calculate the position of any of the planets for almost any date, until you get to Pluto.
To try to get around that, I attempted to ...
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Would it be practical to map out the Kuiper Belt and Oort Cloud via Radar?
I recall reading an article where the moon, could be detected via radar and that orbiting radar satellites could map out the surface of mars, and in some cases even parts of Venus (the lattermost ...
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How to find the Moon's node longitude crossing
Yes, I asked this in the past but I got sidetracked and did other things. Now my question is, can one find the exact time when "north node" reaches a certain longitude?
I am looking for 15....
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