39 interstellar medium diagram
This diagram shows the location of the region near the Sun within 1500 light-years. The thin purple strips include the local interstellar cloud. The darkest regions have the lowest density of any type of gas. The Sun has been travelling for the last several million years through the Local Bubble a low density region of the interstellar medium. The interstellar extinction of starlight is the most indicative phenomenon revealing the pres- ... lar medium (ISM) is a steeply decreasing func-tion of size, n(a) ∝ a−3.5, extinction is gener- ... diagram has been obtained, the distance and the The Interstellar Medium Although space is very empty and the stars in the Milky Way are very far apart, the space between the stars contains a very diffuse medium of gas and dust astronomers call the interstellar medium (ISM). This medium consists of neutral hydrogen gas (HI), molecular gas (mostly H 2 ), ionized gas (HII), and dust grains. Interstellar medium diagram