The amount of interstellar matter present in our Galaxy is always changing. Which of the following processes is NOT a major contributor to that change?
A) gas from outside the Galaxy falls into the Milky Way because of gravity
B) the powerful explosions that end the lives of massive stars drive material out of the Galaxy
C) interstellar matter in dense clouds collapses into stars and is taken "out of circulation"
D) some atoms of gas combine in dusty clouds to make more complex molecules
E) actually, none of the above is a major contributor to the change
Correct Answer:
Verified
Q19: In order for a cold atom of
Q20: Some of the interstellar gas in our
Q21: The Local Bubble is
A) a region of
Q22: Where is the outer rim of the
Q23: Cosmic rays are
A) high-energy electro-magnetic radiation
B) fast-moving
Q25: Astronomers use the term interstellar extinction to
Q26: The light element lithium (which, on Earth,
Q27: An astronomer is observing a star which
Q28: Which of the following is not a
Q29: The largest types of clouds found in
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents