Q.1
Neutrinos are excellent messengers from deep space because they
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are incredibly difficult to detect
are incredibly easy to detect
can pass through dust, stars and galaxies
exist everywhere in space
Q.2
What are the likely sources of the neutrinos being detected at the South Pole?
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Gamma ray bursts, supernovas, and active galactic nuclei
Xenon atoms in interstellar gas
The sun, especially the coronasphere
The asteroid belt between Mars and Jupiter
Q.3
Ice Cube detects neutrinos by
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Dividing the number of neutrinos by the number of muons detected
Registering the neutrino’s impact on a photodetector held near absolute zero
Counting them inside the glass spheres
Detecting a flash of light created when a neutrino-created muon neutrino strikes ice
Q.4
Ice Cube is most interested in muons that are moving upward because
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they have changed direction by bouncing off the continent under the ice sheet.
Earth blocks the downward-moving muons made by cosmic rays, but not by neutrinos that are traveling upward
no muons can travel downward as this violates parity
all of the above
Q.5
Astronomers and astrophysicists look forward to new types of detectors for new types of radiation and energy because
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ever since Galileo, new telescopes have brought new discoveries
it makes more work for technologists
Antarctica is the last frontier in astrophysics
the entire sky has been mapped in the visible light realm