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 ob...
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...
The vastness of space brings me a sense of chilliness even though I have never experienced it, although I wish to. Just how cold is interstellar space (on average)? How is this even measured? I mea...
The density of material in the interstellar medium is inferred from (i) the electromagnetic radiation it emits; (ii) its effect on electromagnetic radiation passing through it. Often these approaches are combined to learn about different "phases" of the interstellar medium - e.g. hot, cold, high, or low density, ionised or not. For example, we can learn about how much atomic hydrogen there is ...
Add Yahoo as a preferred source to see more of our stories on Google. A large silver rocket flies through a golden morning sky. SpaceX's Starship megarocket could eventually live up to its bold name. ...
Is the angular size of the black hole in the movie "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 ...