The interstellar medium (ism) is, as you say, the gas (and dust) in between the stars, within a galaxy. An to answer the question about an interstellar meteor the size of the moon, that is even more impossibler than an interstellar meteoroid the size of the moon. Evidently, if this process of absorption and reemission happens frequently over a large volume of interstellar matter, the reemitted uv photons can be easily observed by.
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A paper published monday in nature astronomy lays out the early data on borisov,. The cnet article interstellar comet borisov looks ordinary, making oumuamua even weirder says: The interstellar medium can be very hot precisely because it is a gas (gases are a bit weird), and because it is extremely tenuous (extremely tenuous gases are beyond weird).
It consists of molecular, neutral and ionized gas, with densities ranging.
It is the first answer. This nasa report outlines some of the limitations that a realistic implementation of interstellar communication must deal with. In general in movies, in order to have. Is gas/dust an analog for hot/cold, or does the phase diagram of the element in question matter.
I assume everybody is tired of reading questions derived from the movie interstellar, i will try to keep this short and simple: Also, interstellar medium is composed of helium and hydrogen but that doesn't mean the same about dust. There are excellent answers at the recent related question, can it be predicted if an interstellar object will get bound to the solar system by knowing its speed and direction?. The temperature of interstellar medium seems to range mostly between 10 and 10 000 kelvin.
