How did the temperature of the solar system evolve?
As a child, I've read that stars ignite during a so-called "nuclear flash". I understood this as a very violent outburst of energy from the sun, causing all dust between the protoplanets to be blasted...
View ArticleWhy did the dust between the planets disappear during the birth of the solar...
I'm catching up on my childhood mistakes. One of them was the "nuclear flash", the enormous explosion when the sun ignited. Apparently, this did not happen as the ignition of the sun was a gradual...
View ArticleFlux from the Sun on the Earth using the Stefan-Boltzmann law
What is wrong with this computation, plase? I am getting the result of 4291.65 W m^{-2} instead of 1361 W m^{-2}. Thank you very muchimport numpy as npR_S = 6.957e8 # mau = 149597870700 # msigma_SB =...
View ArticleThe star that created our sun
Is the location of the star that would have created our sun known? Meaning our sun's parent star which would have provided the material when it died? If not, has there been any theories on what kind of...
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Integration of Plank curve of the Sun
Why I did not get the value of 1361 W m^{-2}, please? I am getting 2.0125538614437745e-47.from scipy import integrateimport numpy as npk = 1.38e-23 # J K^-1h = 6.63e-34 # J sc = 299792458. # m s^-1pc =...
View ArticleEquation for calculating boolean answer to "is this Earth satellite in eclipse"
I have found plenty of math for determining duration of satellite eclipse, but I am having trouble finding an equation that produces a simple boolean answer to the question "Is this Earth satellite in...
View ArticleIs it possible to view the sun and moon in the sky at the same time?
I'm writing a story. I want my ending to have the sun and moon visible in the sky at the same time. It is symbolism for the larger story.Is this possible? I have tried searching and can't find anything...
View ArticleSun or moon, finding the date and time of crossing a specific longitude
the Sun is currently in Virgo ♍, 13°7'9" or longitude 56.0762 degreeshow does one calculate when exactly the Sun will reach this position again. Since the moon is doing a spin in 29.x days lets use...
View ArticleLooking for data and models for events of Sun and Moon apparent motion in...
For the current Julian Era (from 1, 1, 4713 BCE to modern day), I am looking for a raw data tables or a model that allows to predict the following events related to apparent motion of Sun and...
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Fixing satellite eclipse equations from textbooks that are seemingly failing
I have tried implementing equations from two different textbooks in Python to find if a satellite is in eclipse, but both fail a significant percentage of the time when tested against data from...
View Articlecalculating apogee and perigee for moon and sun
The perigee does not necessarily happen when we have a full moon, using swevents we can easily determine the moon phases. Now can we use python to determine when the Moon and the Sun are the closest...
View ArticleTracking the position of the sun at various times of the day and night for a...
I am looking for a website that will provide me with the degree above and below the horizon of the position of the sun at various times of the day and night for a particular location.looking for...
View ArticleResolving variance between Skyfield-generated sun vectors and test data when...
I have two functions that get TEME and GCRS Earth-Sun position vectors using Skyfield:earth_sun_vectors.py"""Utilities for getting Earth-Sun vectors in a reference frame at a UTC epoch."""# Standard...
View ArticleDetermine sun azimuth and elevation for shading a window throughout the year
I was wondering how I could get the sun's azimuth and elevation values to shade a particular window with a roller shutter.At first I thought azimuth is good enough; of course, it wasn't, as I found out...
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On what four dates dates do we observe the minimal, maximal, and two days of...
In case the title is a bit confusing, what I'd like to know is essentially respectively on which dates the Solar axial tilt is pointing straight towards Earth, straight away from Earth, and...
View ArticleCould UV-A imaging sensor reasonably see a total eclipse in progress through...
Let's suppose the ultimate disaster occurs... you've blown several thousand dollars on travel & lodging to view an eclipse, and now... minutes before the big event... the sun is behind a...
View ArticleCould a sheet of plasma ejected from the sun's surface magnetically reconnect...
Could the Corona of the sun be getting heated by large sheets of plasma ejecting smaller sheets and these in turn ejecting smaller sheets ?
View ArticleDetermining Time Based on Arc Seconds
So our arc day starts at 20°41'32 which is midnight (0:00) and ends 24 hours later at 21°42'42. According to my calculations it traveled 0 degrees, 59 minutes, and 30 seconds or 3570 arc seconds in 24...
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What is the meaning or information given by the solar image at 4500Å?
On the latest solar images from NASA, there is one picture lablled "continuum 4500 Å". There are bands diagonally in the picture as well.What is the significance and meaning of this image?(There are...
View ArticleWhat is the solar diameter?
What is the solar diameter in SI units?Google tells me this is 1.3927 Gm.How accurate is that figure?I am looking for estimates with referenced data and calculations, and the uncertainties:due to...
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