In C programming, the question mark is used as a conditional symbol. For example, in the expression x1 ? x2 : x3, if x1 is not zero, then x2 is evaluated, otherwise x3 is evaluated. THIS DEFINITION IS ...
The object is far outside our galactic neighborhood, possibly billions of light-years away. But astronomers have seen similar objects closer to home. This glowing red question mark was captured in the ...
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