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 …
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 …
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 …
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 …
Can it be predicted if an Interstellar Object will get bound to the ...
Aug 4, 2024 · Recently I've reading there are only 2 known Interstellar Objects. Suppose another one appears which will cross the solar system at some point, could it be predicted if it will get bound to …
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 …
Solar-system origin of interstellar bodies (like 1I/ʻOumuamua)?
Jul 6, 2025 · I understand that 1I/ʻOumuamua and the other two bodies (2I/Borisov and 3I/ATLAS) are classified as interstellar objects based on their distance from the Sun and their speed. In other words …
Why do comets come from our local Oort cloud instead of from ...
Dec 28, 2014 · 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 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 …
interstellar travel - How do we know about the origin of ʻOumuamua ...
How do we know that ʻOumuamua is interstellar and not otherwise? I fail to understand the logic that the extraordinary speed of the object proves it to be of interstellar origin, and that our sun's gravity failed …