a. nebula
A nebula is a mist of particles, particularly and ionized gases hydrogen and helium. Basically, the word was adopted to represent any distributed gigantic object, comprising galaxies across the Milky Way. Andromeda Nebula was sometimes also known as part of the Andromeda Galaxy which re[present a gigantic mist of hydrogen.
It gone wrong in the first time
I didn't listen to the files in your lesson, so let's list the information we have:
-song composed or performed in 1941
-song written (together with) Billy Strayhorn
-song by Duke Ellington
There is one such song, and it's "take the "A" train" - I think this is the correct answer!
