- Is the angular size of the black hole in the movie interstellar . . .
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
- What is the difference between gas and dust in astronomy?
The temperature of interstellar medium seems to range mostly between 10 and 10 000 Kelvin Is gas dust an analog for hot cold, or does the phase diagram of the element in question matter too?
- How does interstellar matter density vary? - Astronomy Stack Exchange
The interstellar medium is a multiphase medium, and you can find (some references in this lecture and in this thesis manuscript (this one is in French, but numbers are international)): the hot ionized medium (HIM) with density as low as 10^-3 cc (particles per cubic centimeter); the warm ionized medium (WIM), with density of the order of 0 03 cc; the warm neutral medium (WNM), with density of
- 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 $\rho \sim 1\text{ }ppcm$ (one proton per cubic
- interstellar medium - What is the distribution of organic compounds in . . .
Methane has also been discovered on the exoplanet HD 189733b (though it is the only example we have of methane on an exoplanet), and often exists in interstellar clouds, showing that it is quite common throughout our galaxy Organic matter refers to matter composed of organic compounds, as part of an organism
- What came first: the Sun shining or the existence of helium?
The helium abundance in the universe has hardly changed since after nucleosynthesis in the big bang which created about 23% He by mass The figure now in the interstellar medium of our Galaxy is estimated to be around 25%
- Life planets orbiting black-holes. Can Do they really exist?
Interstellar's "Miller's Planet" is utter rubbish First of all, black holes don't start out as black holes Black holes form at the end of the life cycle of very big star (at least 25 solar masses but more frequently over 35 or 40 SMs) when it goes supernova or hypernova Any planets in orbit around that star are going to be obliterated before the black hole becomes a black hole We need to
- Why dont we see the galaxy center? - Astronomy Stack Exchange
The main reason we don't see the bright center of our galaxy, which is composed of millions of stars, is dust Visible light is absorbed and scattered by interstellar dust, but that doesn't mean we can't see it on other waves of the spectrum, for example, infrared light doesn't suffer as much because of the dust Notice on this image how bright the galaxy center looks on the infrared and the
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