A cloud of interstellar gas is held together by
A) the gravitational force.
B) infrared radiation.
C) electromagnetism.
D) All of the above.
Correct Answer:
Verified
Q15: Each second,the burning Sun's mass
A)decreases.
B)increases.
C)remains unchanged.
Q16: Dark nebula appear dark because they
A)reflect light.
B)emit
Q17: Nebula that tend to be reddish in
Q18: What is the evidence that the Sun
Q19: Nebula that tend to be bluish in
Q21: As you read these words,the Sun is
A)gaining
Q22: Temperature differences between nighttime and daytime on
Q23: Evidence of the solar wind on Earth
Q24: Venus and Earth started out with roughly
Q25: What travels up and down the Sun's
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