English Language · English
Which finding, if true, would most directly support the researchers' claim that the thick disk of the Milky Way formed in two distinct phases rather than a single one? The Milky Way galaxy is composed of millions of stars in a relatively flat structure containing a thin disk and a thick disk. Based on computer simulations and analysis of data on the brightness, position, and chemical composition of about 250,000 stars in the thick disk (collected from two telescopes, one in China and one orbiting in space), astrophysicists Maosheng Xi ang and Hans-Walter Rix claim that the thick disk of the Milky Way formed in two distinct phases rather than a single one.
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The stars i n the Milky Way tend to have very similar chemical compositio ns.
- 2The thin disk contains about twic e as many stars that can be seen from Earth as the thick disk does.
- 3There's an age difference of about 2 billion years between certain stars in the thick disk.✓
- 4The telescopes used by the researchers have detected stars of similar ages in galaxies other than the Milky Way.
Correct answer
There's an age difference of about 2 billion years between certain stars in the thick disk.
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