Multiple Choice
The dimensions of the disk of our Milky Way Galaxy are
A) diameter,80,000 light-years;thickness,6500 light-years.
B) diameter,6500 light-years;thickness 2000 light-years.
C) diameter,2000 light-years;thickness,160,000 light-years.
D) diameter,160,000 light-years;thickness,2000 light-years.
Correct Answer:
Verified
Correct Answer:
Verified
Q65: One proposal for the mysterious dark matter
Q67: What is microlensing?<br>A) The focusing of starlight
Q68: "Standard candles," which are important for finding
Q69: Observations from what two parts of the
Q71: Flocculent spiral galaxies have spiral arms that
Q72: The Sun takes about 220 million years
Q73: What is the evidence that a supermassive
Q74: If the Galaxy were spinning like our
Q75: How would astronomers,ancient or modern,use a "standard
Q177: The period-luminosity relationship for Cepheid variable stars,relating