- Is it possible for a meteor the size of the moon to enter our solar . . .
And to answer the question about an interstellar "meteor the size of the Moon", that is even more impossibler than an interstellar "meteoroid the size of the Moon" A meteor is not a solid object It is a streak of light which people see in the sky as a meteoroid or an asteroid falls through Earth's atmosphere
- 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
- Interstellar Dust properties - Astronomy Stack Exchange
While practicing for an upcoming examination, I ran into this problem: Which of the following best describes dust grains in the interstellar medium: They are a few hundred nanometers in size (siz
- What is a Gentle Giant Black Hole? - Astronomy Stack Exchange
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 black hole reduces the tidal forces at the event horizon, such that a falling entity would not be spaghettified
- What are the differences between Intergalactic Medium, Interstellar . . .
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 densest, usually found in molecular clouds The
- solar system - In theory, could an object like Oumuamua have been . . .
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 speed and direction? But I'll take this opportunity to give some actual numbers relevant to the trajectory of 'Oumuamua Horizons has a file for 'Oumuamua From the body data page, 1I 'Oumuamua (A
- Why does rotation prevent the further contraction of the cloud?
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 gas cloud, and
- How to count observable number of galaxies at a given latitude . . .
2 If galaxies are uniformly distributed in space, then in the absence of extinction, the number of galaxies per square degree brighter than magnitude m is given by $$\log_ {N_0} (m) = 0 6m + C$$ How will the formula look like if extinction in the interstellar medium is counted?
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