Which of the following can appear as disks with the help of a telescope?
A) planets
B) main-sequence stars
C) red giants
D) supernovas
Correct Answer:
Verified
Q14: The two chief elements in the sun
Q15: The sun has
A) no atmosphere.
B) an atmosphere
Q16: The sun is an)
A) unusually small star.
B)
Q17: The duration of the sunspot cycle is
Q18: The temperature of the sun's photosphere is
Q20: Advantages of large reflecting telescopes include their
Q21: White dwarfs
A) are young stars.
B) are old
Q22: The majority of main-sequence stars are
A) blue.
B)
Q23: The color of a relatively hot star
Q24: Stars at the lower end of the
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