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  • Is the angular size of the black hole in the movie interstellar . . .
    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 stunning visuals, celestial objects are displayed as if they were extremely close to the observers, having a enormous apparent angular size
  • How cold is interstellar space? - Astronomy Stack Exchange
    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 hot precisely because it is a gas (gases are a bit weird), and because it is extremely tenuous (extremely tenuous gases are beyond weird)
  • Interstellar Dust properties - Astronomy Stack Exchange
    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 nanometers in size (siz
  • interstellar medium - What is the word for space that is in the solar . . .
    We distinguish space by its contents; the space within the heliosphere is called the interplanetary medium (it contains solar plasma, dust, etc ), while the interstellar medium comprises sparse gaseous molecules from the Local Fluff and (if you go far enough) the rest of the Local Bubble
  • How does interstellar matter density vary? - Astronomy Stack Exchange
    The interstellar medium is a multiphase medium, and you can find (some references in this lecture and in this thesis manuscript (this one is in French, but numbers are international)): the hot ionized medium (HIM) with density as low as 10^-3 cc (particles per cubic centimeter); the warm ionized medium (WIM), with density of the order of 0 03 cc; the warm neutral medium (WNM), with density of
  • Why is the interstellar medium so hot? - Astronomy Stack Exchange
    What that ESA (European Space Agency) page titled Hot gas sloshing in a galactic cauldron that you link to describes are called WHIM (Warm–Hot Intergalactic Medium) They are not interstellar medium, but intergalactic medium gas The difference in density is huge, with interstellar medium density at an average of ρ ∼ 1 ppcm ρ ∼ 1 p p c m $\rho \sim 1\text{ }ppcm$ (one proton per cubic
  • Why do comets come from our local Oort cloud instead of from . . .
    But why are they ejected to form specifically a local Oort cloud instead of going interstellar and becoming vagabonds? Per multiple models, most comets did become vagabonds
  • What is the difference between gas and dust in astronomy?
    The temperature of interstellar medium seems to range mostly between 10 and 10 000 Kelvin Is gas dust an analog for hot cold, or does the phase diagram of the element in question matter too?
  • What are the differences between Intergalactic Medium, Interstellar . . .
    The Intergalactic Medium, Interstellar medium (ISM) and Intracluster medium (ICM) are mediums that fills the space between galaxies pace between the star systems in a galaxy
  • What is the temperature of outerspace? - Astronomy Stack Exchange
    The temperature in the heliosphere is about one million Kelvin, lower (but still very hot) in the outer regions of the heliosphere, higher close to the sun But the density of the plasma is very low, so you wouldn't feel the heat (except close to the sun) Within Earth's exosphere, reaching up to 10,000 km, the temperature is lower, roughly 1,000 to 1,500 C In interstellar space there exist





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