What Kind of Object Creates an Evacuated,very Hot Bubble in the Interstellar

Q9: The oldest stars in the galaxy are

Q10: Where are globular clusters located in the

Q11: What kind of star is located at

Q12: The mass of the galaxy has been

Q13: What effect do interstellar dust particles have

Q15: The velocity of the sun in its

Q16: What evidence do we have that there

Q17: What keeps the matter in an HII

Q18: In order to make a scale model

Q19: The stars in globular clusters are<br>A)Young and