Question

An early theory suggested that one of these events from Geminga was responsible for the low-density of the Local Bubble. For 10 points each:
[10m] Name these events which can be dated by the presence of Mn-53 (“manganese 53”), Fe-60 (“iron 60”), or Pu-244 (“plutonium 244”) in deep sea rock. Adrian Mellot proposed that the Late Ordivician extinction was caused by one of these events damaging the earth’s atmosphere.
ANSWER: supernova [accept hypernova; accept gamma ray burst or GRB; prompt on black-hole or neutron star or white-dwarf mergers]
[10e] Near Earth supernovae and gamma ray bursts could conceivably cause extinctions by damaging the “layer” of this triatomic allotrope of oxygen in the upper atmosphere.
ANSWER: ozone [prompt on O3]
[10h] The nearest candidate for a potentially future Near Earth Supernova is located in this constellation which contains the Einstein Cross, a lensed quasar. This constellation contains the first known exoplanet to orbit a Sun-like star.
ANSWER: Pegasus [accept IK Pegasi B and 51 Pegasi B]
<KT, Other Science: Earth Science>

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Summary

Data

Berkeley ABerkeley C1010020
Berkeley BStanford A1010020
Ottawa AMcDouble West-Carleton1010020
Toronto Ray of Sun in the SkyOttawa C010010
Ottawa BWaterloo010010
SGV CapitalI will play anything with a buzzer in front of me010010
Cambridge BBristol010010
WarwickDurham010010
EdinburghImperial B010010
Imperial ACambridge A1010020
OxfordBirmingham010010
Purdue AChicago B1010020
Notre Dame AIllinois B0101020
Illinois ANotre Dame B1010020
Chicago APurdue B010010
VanderbiltIndiana010010
Cornell MATLABRIT010010
Syracuse+RochesterCornell R010010
Squidward Community CollegeMissouri A0101020
WUSTL H2OSIUE010010
WUSTL XYZMissouri B010010