d) Describe the composition of the interstellar medium. Explain how it has been possible to map the HI clouds. 

The interstellar medium (ISM) is the vast expanse of matter that fills the space between stars within a galaxy. It's composed of various gases, dust particles, and cosmic rays. The primary constituents of the interstellar medium are hydrogen and helium, with hydrogen being the most abundant element. However, there are also trace amounts of heavier elements such ______ _____ ________ ________ _________ ______ _______ _____.
___ ______ ________ ________ ______ _______ _____ _______ ____ ___ _____ _______.
________ _____ _________ _____ ___ ________ ___ ___ _______ ________.
__________ __________ _______ ____ _________.
________ __________ _______ __________ _________ ____ ________ _______ ___ ___ __________ ______.
_________ _____ ________ __________ ___ ____ ___ ________ _____ ______ ____ __________.
____ __________ _________ __________ ___ __________ __________ _______ _________ ____.
________ _________ __________ ________ _______ ____.
_________ ______ ________ _____ ___.
_________ _________ ____ _____ ______ ___ _______.
__________ ___ __________ ________ _________ _________ ____ ________.
__________ ________ _________ ___ _________ __________ ______ ________.
_____ ________ _______ ______ ___ _______ ____ _________ ___ _____.
_____ _______ ___ ___ _____ ______ ________ _______ ___ _______ __________ __________.
_______ ____ ______ ____ __________ ________ ___ ___ ___ ____ _________ ___.
______ ______ ____ __________ _______ _________ ____ ___.
_________ ___ _______ ________ ________ _______.
__________ _______ ___ ___ ____ __________ _____ ______ _______ _____ _________.
__________ ____ ________ _____ ______ ___ _____ _________ ___.
_________ ___ ________ _______ ________ ____ _________.
__________ _______ ____ ______ _____ ________ ____ _______ __________ ____ _____ ___.
_________ _____ _______ _________ ______ ________ ______ ____ ____.
_______ ___ __________ _______ ______ __________ ____ ______.
___ ______ __________ __________ ______ ________ ________ _________ _____ ___ __________ __________.
_________ ____ _____ ____ __________ _____ __________ __________ ______ _______ _________.
Get Full Answer on WhatsApp