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 readings?
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 stunning visuals, celestial …
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 …
the sun - How did the Local Interstellar Cloud form? - Astronomy Stack ...
Jul 20, 2024 · The Local Interstellar Cloud (LIC) is a low-density interstellar cloud which embed the Sun and other stars. How did this region form? I suppose a supernova or stellar winds from multiple stars …
What are the differences between Intergalactic Medium, Interstellar ...
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 from $\sim …
solar system - In theory, could an object like 'Oumuamua have been ...
Aug 24, 2024 · Maybe, but the probability is very low. 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 …
Why does rotation prevent the further contraction of the cloud?
Apr 16, 2021 · In the book Horizons: Exploring the Universe (2018) by M.Seeds and D.Backman, chapter 9, page 170-171, it states that: At least four factors resist the compression of an interstellar …
What is a "Gentle Giant" Black Hole? - Astronomy Stack Exchange
Sep 12, 2023 · A similar phrase, "gentle singularity," is used in the movie Interstellar. There has been some discussion about that, in which the consensus seems to be that the size of a supermassive …
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 hot precisely …
Why is the interstellar medium so hot? - Astronomy Stack Exchange
The difference in density is huge, with interstellar medium density at an average of $\rho ∼ 1\ ppcm$ (one proton per cubic centimeter), but the density of these WHIM being even a few orders of …