A radio signal emitted from Earth would take about
A) 4 years to leave our galaxy.
B) 20,000 years to leave our galaxy.
C) 80,000 years to leave our galaxy.
D) 100,000 years to leave our galaxy.
Correct Answer:
Verified
Q10: In which city is Polaris highest in
Q11: The daily motion of celestial objects in
Q12: The star nearest the Earth is
A)the Sun.
B)Alpha
Q13: We say we are looking back in
Q14: The nearest star system closest to our
Q16: The Milky Way galaxy is about
A)4 light
Q17: The background stars during a solar eclipse
Q18: A light year is a unit of
A)time.
B)energy.
C)distance.
D)mass.
Q19: How far is a light year?
A)nearly 10
Q20: The diurnal rotation of the stars refers
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