A Massive Star Has Seemingly Vanished from Space With No Explanation (VIDEO)
Astronomers are trying to figure out whether the star collapsed into a black hole without going supernova, or if it disappeared in a cloud of dust.
Astronomers are trying to figure out whether the star collapsed into a black hole without going supernova, or if it disappeared in a cloud of dust.
Students can hide their ignorance and answer questions correctly in an exam without their lack of knowledge being detected by teachers — but only in the quantum world.
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