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- Is the angular size of the black hole in the movie interstellar . . .
3 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
- Do interstellar asteroids decelerate and eventually stop?
4 I do wonder, do interstellar asteroids eventually stop at one point in space after they gradually decelerate (or) even do they decelerate? Though there is no air like on earth and thus asteroids will not be affected by frictional forces, do they have friction with gravitational forces against their trajectories?
- What are the differences between Intergalactic Medium, Interstellar . . .
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 from ∼10−3 ∼ 10 − 3 to ∼106 ∼ 10 6 particles per cm 3 3 and temperatures ranging from a few K up to 10,000 or 20,000 K The molecular gas is the coldest and densest, usually found in molecular clouds The
- terminology - Is intrastellar commonly used by astronomers to refer . . .
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 light", and actually correct uses meaning "inside a star" would extrasolar be used by astronomers to refer to objects outside of our solar system?
- 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 (one proton per cubic centimeter), but the
- 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)
- Is interstellar matter even detectable at (near) 0 kelvin?
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 readings?
- Does the radio signal decay when it travels through the intergalactic . . .
This NASA report outlines some of the limitations that a realistic implementation of interstellar communication must deal with Even in the case of a quantum noise-limited system, we can still make the best of the limitations dealt to us If the signal-to-noise ratio is above an acceptable threshold then the signal will be received well
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