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 …
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 …
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 …
interstellar medium - What is the word for space that is in the solar ...
Jun 27, 2016 · 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 …
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 …
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 is the temperature of outerspace? - Astronomy Stack Exchange
Mar 18, 2014 · In interstellar space there exist hot (e.g. 10,000 K) and cold gas clouds. Due to the very low density, hot and cooler fractions can penetrate each other, such that there doesn't need to be a …
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 …
What "long chain of carbon chemistry" in the interstellar medium ...
Oct 29, 2020 · From that, I conclude that Cyclopropenylidene in the ISM (interstellar medium) is also a product of a long chain of carbon chemistry. Question: What "long chain of carbon chemistry" in the …
How is it determined what celestial objects are considered to be part ...
Feb 28, 2025 · For a more local analogy, the interstellar asteroid Oumuamua passed well within the Solar System, yet is often not considered part of our Solar System, since it was never gravitationally …