Top new questions this week:
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Obviously I have forgotten by basic college chemistry. I am getting carbon dioxide at 1.87kg per cubic meter and compared it to nitrogen and oxygen but source says carbon dioxide is 1.5 times heavier ...
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It ocurred me, if a star with at least one planetary companion undergoes a nova or supernova, we shoud expect the debris to be deflected to some degree, on exit. To ilustrate it, first let's take the ...
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I see Adhara is cited in many places (for example, here) as being the brightest source of ultraviolet light in the sky. The particular source uses the modifier "extreme", but most other ...
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I'm trying to calculate the moment of the upcoming summer solstice using astropy, and I can't seem to get an answer that matches the accepted values that I see online. I thought that the moment of the ...
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In the precise and rigorous astronomical use of the word, does the term "syzygy" refer to an astronomical alignment of three and only three bodies?
Or, can syzygy be interpreted as an ...
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Here's an exceprt from the recent question
The claim may refer to the band labeled U4 in the Celescope Catalog of Ultraviolet Stellar Observations, which refers to a filter with a spectral response ...
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(I am having physics background; I am not an astronomer/astrophysicist.)
How to solve a single nonlinear algebraic equation in two variables, $x$ and $y$?
(I know that - if there are two variables, ...
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Greatest hits from previous weeks:
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If this is the wrong group please direct me to the correct one.
It seems intuitively obvious that the amount of daylight per annum should be the same for any latitude on earth. For example, 12 hours ...
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The atmosphere of a planetary body (assuming it has an atmosphere) is described as being made up of distinct layers.
For example, Earth, Saturn and Jupiter all have a stratosphere and a troposphere....
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I have got a Celestron Astromaster 130EQ telescope, which lens should I use to see the various planets and nebula?
When I tried to see Mars it was only a small red dot on scope.
As per the ...
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Is it about the same as Earth's orbital speed?
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Also, does it always take the same amount of time, or does it fractionally differ on each revolution?
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I read an article at abc.net.au saying that the power output of the sun is about 276.5 watts per cubic metre, similar to that of a compost pile.
A compost pile is not incandescent, while the sun is. ...
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As like Earth, does the moon have a day (24 hours). If it has, how many hours are in a moon day?.
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Can you answer these questions?
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I have been digging through various scientific articles on modelling the breakup of SL9 to attempt to ascertain its intial size, yet the various estimates vary tremendously.
A radius of 700 m - 1000 m ...
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I sometimes read that only deuterium-deuterium fusion can occur in brown dwarfs... And maybe deuterium-proton fusion? To He-3?
In order to overcome Coulombic repulsion and, occasionally, fuse, protons ...
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For calculating the Right Ascension of the moon I need the GMST (Greenwich Mean Sidereal Time) in Degrees.
I have found the formula
GMST = 100.4606184 + 0.9856473662862 * D + H * 15,
D = number of ...
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