What are interstellar grains?
A) tiny dust particles that are part of interstellar clouds
B) leftover fragments of planetesimals that are blown out of the Solar System
C) droplets of material that have condensed out of the Solar nebula
D) the material out of which exoplanets are formed
Correct Answer:
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Q45: Which of the following Solar System objects
Q46: Astronomers believe that many satellites of the
Q47: A huge interstellar cloud collapsed into a
Q48: Which of the following features of the
Q49: One reason the planets near the Sun
Q51: What are planetesimals?
A) very small planets
B) satellites
Q52: How did the natural satellites in the
Q53: Which of the following features of the
Q54: The numerous craters we see on the
Q55: Ice giants have been discovered orbiting very
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