1|Page
ASTR 1102 FINAL EXAM LATEST 2025 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
What's left behind after a supernova explosion?
There could be more than 1 correct answer.
A) A neutron star
B) A white dwarf
C) A black hole
D) Nothing - ANSWER-A or B or D
How can a supernova, though rare in our solar neighborhood, can
wipe out life on Earth?
A) By heating the Earth to large levels
B) By the SN ejecta directly impacting the Earth
C) By showering the Earth's atmosphere with high energy
radiation (X-rays/gamma-rays) destroying the ozone layer
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D) By radioactivity due to the decays of nickel and cobalt -
ANSWER-C
Which type of star do you think could rotate faster?
A) Red giant
B) Neutron star
C) Main-sequence star
D) White dwarf - ANSWER-B
What did LGM in LGM-1 stand for?
A) Luminous Gyrating Mass
B) Large Gravitational Mass
C) Livid Green Monkey
D) Little Green Men - ANSWER-D
What are pulsars?
A)White dwarfs
B)Neutron stars
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C)Black holes - ANSWER-B
What's the difference between white dwarfs and pulsars?
A) The progenitor stars of white dwarfs are not exploding as SNe
B) White dwarfs are supported by electron degeneracy pressure
while pulsars from neutron degeneracy pressure
C)Pulsars are much smaller in size, rotate faster and possess
larger magnetic fields
D) Say whaaaa? - ANSWER-B
Why do we miss most GRBs?
A) They happen so fast, that we can't catch them all.
B) We don't have good enough telescopes.
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C) The "jets" formed during the explosion happen not to point to
our direction. - ANSWER-C
In a binary system, the primary star is a massive 15-solar mass
star and the secondary star has mass about the same as the sun.
What will this binary system evolve to when the massive star
dies?
A) A red giant star accreting mass onto a white dwarf
B) A main sequence star accreting mass onto a white dwarf
C) A red giant star accreting mass onto a neutron star or a black
hole - ANSWER-C
What's a main difference between X-ray bursts and Novae?
A) XRBs require onto accretion a black hole while novae
accretion onto white dwarfs
B) XRBs are less frequent than Novae
C) XRBs last for a few days while novae for up to a minute
ASTR 1102 FINAL EXAM LATEST 2025 ACTUAL EXAM WITH
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS (100%
VERIFIED ANSWERS) |ALREADY GRADED A+| ||PROFESSOR
VERIFIED|| ||BRANDNEW!!!||
What's left behind after a supernova explosion?
There could be more than 1 correct answer.
A) A neutron star
B) A white dwarf
C) A black hole
D) Nothing - ANSWER-A or B or D
How can a supernova, though rare in our solar neighborhood, can
wipe out life on Earth?
A) By heating the Earth to large levels
B) By the SN ejecta directly impacting the Earth
C) By showering the Earth's atmosphere with high energy
radiation (X-rays/gamma-rays) destroying the ozone layer
,2|Page
D) By radioactivity due to the decays of nickel and cobalt -
ANSWER-C
Which type of star do you think could rotate faster?
A) Red giant
B) Neutron star
C) Main-sequence star
D) White dwarf - ANSWER-B
What did LGM in LGM-1 stand for?
A) Luminous Gyrating Mass
B) Large Gravitational Mass
C) Livid Green Monkey
D) Little Green Men - ANSWER-D
What are pulsars?
A)White dwarfs
B)Neutron stars
,3|Page
C)Black holes - ANSWER-B
What's the difference between white dwarfs and pulsars?
A) The progenitor stars of white dwarfs are not exploding as SNe
B) White dwarfs are supported by electron degeneracy pressure
while pulsars from neutron degeneracy pressure
C)Pulsars are much smaller in size, rotate faster and possess
larger magnetic fields
D) Say whaaaa? - ANSWER-B
Why do we miss most GRBs?
A) They happen so fast, that we can't catch them all.
B) We don't have good enough telescopes.
, 4|Page
C) The "jets" formed during the explosion happen not to point to
our direction. - ANSWER-C
In a binary system, the primary star is a massive 15-solar mass
star and the secondary star has mass about the same as the sun.
What will this binary system evolve to when the massive star
dies?
A) A red giant star accreting mass onto a white dwarf
B) A main sequence star accreting mass onto a white dwarf
C) A red giant star accreting mass onto a neutron star or a black
hole - ANSWER-C
What's a main difference between X-ray bursts and Novae?
A) XRBs require onto accretion a black hole while novae
accretion onto white dwarfs
B) XRBs are less frequent than Novae
C) XRBs last for a few days while novae for up to a minute
