The age of the Milky Way galaxy has been estimated to be at least 13 billion years. What is this estimate based on?
A) observations of open clusters
B) observations of globular clusters
C) 21-cm radiation from H I regions
D) radiation produced at the centre of the galaxy
Correct Answer:
Verified
Q8: Our galaxy is suspected to be surrounded
Q12: Why do younger stars have more heavy
Q17: What kind of orbits did the first
Q30: _ are groups of 100,000 to 1,000,000
Q34: What is the best evidence that Sagittarius
Q41: Which of the following presents a challenge
Q43: You observe a metal-rich star in a
Q44: According to the traditional hypothesis, how did
Q47: Which of the following best describes the
Q77: The _ of the galaxy contains population
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