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

The interstellar medium (ISM) is the matter that exists between stars in a galaxy. It primarily consists of gas (about 99%) and dust (around 1%). The gaseous component is predominantly hydrogen, existing in various forms such as neutral atomic hydrogen (HI), ionized hydrogen (HII), and molecular hydrogen (H2). Other elements like helium, carbon, oxygen, and nitrogen are also present in ___ ________ __________ _________ ____ ______.
__________ _________ ______ ___ ________ ___ __________ _______ _____.
____ ___ _______ ____ __________ ________ _____.
________ _______ ___ _______ _________ ___ ________ ________ ___.
___ ___ ________ ____ ______ ____ _________.
________ ___ __________ ___ _____ ____ ________ __________ ____ ______ _______.
_______ _____ ___ __________ __________ __________ ___ ______ ___.
______ __________ ___ __________ __________ _____ _________.
__________ _______ _________ __________ ____ _________ ________ _________ ________.
_____ _____ _____ ________ _____ ______ ______ ________ _______.
_______ _____ _________ ___ _______ _______.
________ _____ ___ ______ _________ __________ _____ ______ _______ __________ _____.
_______ _________ ________ ____ _________.
______ ______ ______ ______ _______ ____.
_______ _______ _____ ___ ________.
_____ _______ _________ ___ __________ __________ ________ ________ __________ _________ _________ ________.
__________ ________ ______ ______ _______ ____ _______ _________ __________ ____.
___ _________ _______ _________ ____ __________ __________ _______ __________ __________.
_____ _____ _________ ______ ____ _______ __________ ______.
_______ _________ ___ ______ ____.
______ _______ ___ ____ _______ _________ __________ ________ ____.
____ _________ ____ ________ __________.
_____ ______ _______ ________ _________.
______.
Get Full Answer on WhatsApp