Astro 1 Exam 4 2024/2025 Exam
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100% Correct Answers
The radius of the event horizon of the supermassive black hole at the
center of the Milky Way Galaxy is
A) about 100 Astronomical Units.
B) There is no supermassive black hole at the center of the Milky Way.
C) about 50 Megaparsecs
D) about 1000 light years
E) about 100,000 light years - 🧠ANSWER ✔✔A
How could the universe be accelerating, despite the gravitational pull of all
the matter in it?
A) There's no friction in space.
B) There could be less dark matter than we think.
C) There could be a new force or property of space that affects the
universe on its largest scales. D) Our laws of nature are incorrect.
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,E) Probably B and C - 🧠ANSWER ✔✔C
The redshifts of galaxies are found to be larger
A) for galaxies that are moving towards us.
B) for galaxies that are in the Local Group than for galaxies that are outside
of the Local Group. C) for galaxies that are further away.
D) for galaxies that are older.
E) for dwarf galaxies than for spiral galaxies. - 🧠ANSWER ✔✔C
What is the difference between an E0 and an E7 galaxy?
A) There is no such thing as an E0 galaxy.
B) The E7 has a circular shape and E0 is oval.
C) The E7 has an oval shape and the E0 is circular. D) The E7 has a larger
disk than the E0.
E) The E7 has a smaller disk than the E0. - 🧠ANSWER ✔✔C
Which of the following is TRUE?
A) It is possible for galaxies that are very distant to actually move through
space at a speed several
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, times the speed of light.
B) We measure a redshift for roughly half of the galaxies that we observe,
and for the others we
measure a blueshift.
C) The center of the universe is located at a point about 200 Mpc from us in
the center of a cluster
of galaxies.
D) At the time that the Big Bang expansion began, all matter and energy in
our observable universe
was compressed into a single point of space.
E) A redshift occurs when a photon loses energy and slows down as it
moves through space. - 🧠ANSWER ✔✔D
A nova is
A) a star that is invisible and then becomes visible for several minutes
because the planetary debris
surrounding it moves aside.
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Questions and Detailed Answers | Get it
100% Correct Answers
The radius of the event horizon of the supermassive black hole at the
center of the Milky Way Galaxy is
A) about 100 Astronomical Units.
B) There is no supermassive black hole at the center of the Milky Way.
C) about 50 Megaparsecs
D) about 1000 light years
E) about 100,000 light years - 🧠ANSWER ✔✔A
How could the universe be accelerating, despite the gravitational pull of all
the matter in it?
A) There's no friction in space.
B) There could be less dark matter than we think.
C) There could be a new force or property of space that affects the
universe on its largest scales. D) Our laws of nature are incorrect.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
,E) Probably B and C - 🧠ANSWER ✔✔C
The redshifts of galaxies are found to be larger
A) for galaxies that are moving towards us.
B) for galaxies that are in the Local Group than for galaxies that are outside
of the Local Group. C) for galaxies that are further away.
D) for galaxies that are older.
E) for dwarf galaxies than for spiral galaxies. - 🧠ANSWER ✔✔C
What is the difference between an E0 and an E7 galaxy?
A) There is no such thing as an E0 galaxy.
B) The E7 has a circular shape and E0 is oval.
C) The E7 has an oval shape and the E0 is circular. D) The E7 has a larger
disk than the E0.
E) The E7 has a smaller disk than the E0. - 🧠ANSWER ✔✔C
Which of the following is TRUE?
A) It is possible for galaxies that are very distant to actually move through
space at a speed several
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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PRIVACY STATEMENT. ALL RIGHTS RESERVED
, times the speed of light.
B) We measure a redshift for roughly half of the galaxies that we observe,
and for the others we
measure a blueshift.
C) The center of the universe is located at a point about 200 Mpc from us in
the center of a cluster
of galaxies.
D) At the time that the Big Bang expansion began, all matter and energy in
our observable universe
was compressed into a single point of space.
E) A redshift occurs when a photon loses energy and slows down as it
moves through space. - 🧠ANSWER ✔✔D
A nova is
A) a star that is invisible and then becomes visible for several minutes
because the planetary debris
surrounding it moves aside.
COPYRIGHT©PROFFKERRYMARTIN 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
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