Questions tagged [fundamental-astronomy]
Questions involving reference frames, time scales, and how they are determined. Not for general Astronomy 101 questions.
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Simulating Noise in Astronomical Images
I want to add realistic noise to a simulated image but I am a little confused about the process. I want to have some Gaussian random noise representing the readout noise and to also add Poisson noise ...
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Any ideas for an astronomy + ML project? [closed]
I wish to do an astronomy related project which incorporates machine learning.Do you have any suggestions?
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How to find the radius of a satellite not knowing the mass
If I know the semi-major axis, the density of the planet, and orbital period.. how can I find the radius of the satellite? I can't think of any formula to use.
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How strong are the stellar flares on YZ Ceti?
Doing research for a game and trying to understand the implications of the stellar flares from YZ Ceti. In short (ignoring the planets for now), if people were to build large space stations of various ...
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What liquids can be found in the void space?
Is there any material natural or otherwise a free floating liquid that can exist in space?
https://space.stackexchange.com/questions/32274/what-liquids-last-the-longest-in-space
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What was the length of the solar day 73 million years ago?
How could this be estimated, or how accurately could it be extrapolated from a present-day measurement of the Earth's spin-down rate?
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Need help with the calculations/conversion of a celestial object
I'm developing a telescope controller open-source application. I started this project with a very little knowledge of Astronomy.
Basically, the app is going to send data to telescope over a wireless ...
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The Solar Motion and the peculiar velocities of stars
Local standard Of Rest is the hypothetical origin of a reference system with respect to which the motions of all stars in some neighborhood of the sun average out to be zero
which type of motions of ...
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What factors determines the size of a galaxy?
Recently i saw a post comparing sizes of different galaxies with the Milky Way. The largest one being the Ic 1011.What makes this galaxy so large? What factors decide the size of a galaxy?
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Directions to Proxima Centauri
I'm writing a sci-fi novel in which humans venture to the stars for the first time. Their "shake down" cruise takes them to Proxima Centauri. I'm trying to understand where Proxima Centauri is located ...
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Account for radiation energy in the statement "total energy of universe is zero"
I've read in Hawking's book The Theory of Everything that total energy of the Universe is zero. He explained this by saying that if there are two bodies separated by a distance and having some mass, ...
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When black holes forms out of a supernova do they have a very high velocity?
When black holes forms out of a supernova do they have a very high velocity ?? Or do they remains at the position of parent star ??
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How can the temperature of stars can be determined by their color?
How do you determine the temperature of a star by color?
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Relation between angular resolution and aperture?
The angular resolution of a telescope is given by $\frac{1.22\lambda}{D}$.
This should mean that the smaller the aperture D, the higher the angular resolution. But it is exactly the opposite - why?
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Obtain IR diffuse data from WISE
I need some help obtaining IR background diffuse data from the WISE observation. There is already some work done in this regard; see: http://wise.skymaps.info/ . These are .fits files. How do I find ...
