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  1. Is it possible for a meteor the size of the moon to enter our solar ...

    Jun 14, 2025 · And 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". A meteor is …

  2. Is interstellar matter even detectable at (near) 0 kelvin?

    May 12, 2025 · Just how dense would interstellar matter have to be to even (practically) detect it with spectroscopy, if being near 0 kelvin (read: far away from nearby stars) affects its spectral …

  3. Interstellar Dust properties - Astronomy Stack Exchange

    Mar 15, 2021 · While practicing for an upcoming examination, I ran into this problem: Which of the following best describes dust grains in the interstellar medium: They are a few hundred …

  4. How cold is interstellar space? - Astronomy Stack Exchange

    Jun 2, 2016 · The density of the interstellar medium is so very, very low that radiation losses completely dominate over conduction from the medium. The interstellar medium can be very …

  5. Is the angular size of the black hole in the movie "interstellar ...

    Oct 15, 2020 · I assume everybody is tired of reading questions derived from the movie Interstellar, I will try to keep this short and simple: In general in movies, in order to have …

  6. What are the differences between Intergalactic Medium, …

    Oct 29, 2021 · The interstellar medium (ISM) is, as you say, the gas (and dust) in between the stars, within a galaxy. It consists of molecular, neutral and ionized gas, with densities ranging …

  7. What is the composition of 3I/ATLAS?

    Oct 21, 2025 · An interstellar object known as 3I/ATLAS is visiting our Solar System. What is known about its composition? How does this compare to similarly sized (km-scale) cometary …

  8. Why does rotation prevent the further contraction of the cloud?

    Apr 16, 2021 · Which bring the question of why does rotation prevent the further contraction of the cloud? Doesn't the rotation create a centripetal force that pointed inside, thus make the …

  9. Are solar systems formed from a gas centrifuge?

    Feb 20, 2025 · The elements of these stars are formed by nucleosynthesis. These exploding stars would have created an interstellar gas medium in which the contents of these stars mixed. …

  10. terminology - Is "intrastellar" commonly used by astronomers to …

    Quick checks of a few of them show a mixture of simple typos (i.e., "intrastellar" used when "interstellar" is clearly meant), awkward/failed attempts at synonyms for "intracluster stellar …