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Tsync Tsync
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8 years ago
In our best current theory, the first quasars formed about:
A) 14.5 billion years ago.
B) 9 billion years ago.
C) 13 billion years ago.
D) 11 billion years ago.
E) 12 billion years ago.
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Astronomy Today

Astronomy Today


Edition: 8th
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Minoring in physics
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RatatouilleRatatouille
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8 years ago
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Tsync Author
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#2
8 years ago
Exactly what I needed Smiling Face with Open Mouth
Minoring in physics
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#3
8 years ago
Message back if you need anything
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