Recent content by Mendrys

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    I Plotting the orbits of the planets from Ephemeris data

    You need to edit the table settings and choose heliocentric distance. This will be the objects distance from the Sun. You can also choose the observer distance. You should see the following columns added: r__rdot__delta__deldot with r being the objects distance to the sun, delta being...
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    I Observational Astronomy Project Ideas to Show Special Relativity

    Would it be possible using the orbit of Mercury? I don't think a very long observational campaign would be needed to show deviations from the predictions using just Newtonian physics. It was puzzling astronomers decades before Einstein. You could also use the upcoming eclipse in April the...
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    I Making LED bulbs safer: Health and LEDs

    LED bulbs create the different colors/temperatures of light by using varying intensities if 3 separate LED elements inside them, green, red and blue. That is how they can be adjusted to almost any color we can perceive. Some are hard tuned to a specific color, or temperature, for those that...
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    Medical Can people can breathe through their mouth during sleep?

    It's too bad that the article barely mentions that he also drank alcohol while taking sleeping pills as well as using tampons to block his nasal passages. That is something that should always be avoided and probably contributed just as much to his death as their desperate plan to treat his...
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    I Why Do Galaxies Spin and What Drives Their Motion?

    This is new and describes other processes that contribute to the spin of a galaxy. https://phys.org/news/2022-10-flips-galaxies-cosmic-web.html This is from the article and sums it up a bit: "Galaxies which are mostly disk, with a low-mass bulge, tend to have their spin axis parallel to...
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    I Database of binary star data info within 10 PC of Earth

    I would suggest going thru the tutorials on the ESA's Gaia site to gain some experience on the database queries. They are very good, and they also have a database of non-single stars. I haven't gone thru this database, but they may have the orbital parameters, or links to the publications that...
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