Is the angular size of the black hole in the movie "interstellar ...
Oct 15, 2020 · One striking example of this that has seems counter-intuitive, is the angular size displayed for the black hole "Gargantua" in the movie Interstellar. The characters in the movie are so close to it that it can be fully displayed in great detail (see attached image: Black hole seems to cover almost/over 90 degrees of the field of view..!)
Interstellar Dust properties - Astronomy Stack Exchange
Mar 15, 2021 · While it’s true that 98% of the interstellar gas is hydrogen and helium, dust is composed of the last 2%. That is, iron, carbon, silicon, oxygen, etc. 🚫 Finally, while it’s true that blue light is absorbed or scattered more efficiently by …
terminology - Is "intrastellar" commonly used by astronomers to …
The CNET article Interstellar comet Borisov looks ordinary, making Oumuamua even weirder says:. A paper published Monday in Nature Astronomy lays out the early data on Borisov, which is just the second-ever object seen visiting our solar system from beyond.
What are the differences between Intergalactic Medium, …
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 $\sim 10^{-3}$ to $\sim 10^{6}$ particles per cm $^{3}$ and temperatures ranging from a few K up to 10,000 or 20,000 K. The molecular gas is the coldest and ...
interstellar medium - What is the diffuse ionized gas? - Astronomy ...
Oct 16, 2018 · An interstellar cloud is generally an accumulation of gas, plasma, and dust in our and other galaxies. Put differently, an interstellar cloud is a denser-than-average region of the interstellar medium, (ISM), the matter and radiation that exists in the space between the star systems in a galaxy.
How cold is interstellar space? - Astronomy Stack Exchange
Jun 2, 2016 · But since the interstellar medium (ISM) is so dilute, a normal thermometer will radiate energy away faster than it can absorb it, and thus it won't reach thermal equilibrium with the gas. It won't cool all the way to 0 K, though, since the cosmic microwave background radiation won't allow it to cool further than 2.7 K, as described by David Hammen.
How can we know the density of particles in interstellar or ...
Jul 31, 2021 · The interstellar medium forms a small fraction of the total mass in the Galactic disc (about 30% - Chabrier 2001) and thus only 2-3% of the total inferred Galactic mass; and it is highly concentrated towards the Galactic plane and centre. Explaining the dynamics of the Galaxy requires a spherical distribution of dark matter that extends well ...
Interstellar movie: What is the "portal" to the other galaxy?
Jun 2, 2015 · I recently watched Interstellar with some friends and we didn't come to the same conclusion. In my opinion, the portal they use to go to the other galaxy (to visit the three planets) is not a black hole. My friends tell me it is. (warning, contains …
interstellar travel - What proportion of the universe has a …
Jan 3, 2025 · How much of the universe has a completely dark sky? To clarify, I mean “dark” to the unaided human eye. By “completely dark”, I mean there are no persisting lighted images (such as stars or galaxies)
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 magnitude lower at $\rho ∼ 10^{−6}−10^{−5}\ ppcm$, or roughly 1 to 10 protons per cubic meter (NASA's Chandra X-ray Observatory quotes average ...