The type of asteroid that would appear darkest and reflect the least light is type:
A) A.
B) B.
C) C.
D) D.
E) S.
C
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The evolution of a medium-mass star like the Sun, when off of the main sequence, is ____
a. strongly affected by mass absorption from the interstellar medium b. strongly affected by mass absorption from the corona c. not affected by mass loss due to increased solar winds d. strongly affected by mass loss due to increased solar winds e. strongly affected by mass loss due to hydrogen fusion
The brightest 100 stars viewed from Earth are mostly not on the main sequence (even though most stars are) because:
A. only high mass stars formed near us in the Galaxy. B. our region of the Galaxy is very young. C. the most luminous stars are giants and supergiants that have already finished their main sequence lifetimes. D. the main sequence is the shortest part of a star's life, so stars don't spend much time there. E. our region of the Galaxy is very old.
The focal length of a convex mirror is
A. positive B. negative C. zero D. infinity
The birth place of stars: Discuss the observational evidence that supports the idea that most stars are formed in groups from large clouds of interstellar gas and dust
What will be an ideal response?