ISP 205- EXAM 1 2024/2025 Exam
Questions and Answers | 100% Solved
Star - 🧠ANSWER ✔✔Large glowing ball of gas that generates heat and
light through nuclear fusion
Planet - 🧠ANSWER ✔✔Moderately large object that orbits a star. Shines
by reflected light. May be rocky, icy, or gaseous in composition
Moon (or satellite) - 🧠ANSWER ✔✔Object that orbits a planet
Asteroid - 🧠ANSWER ✔✔Relatively small and rocky object that orbits a
star
Comet - 🧠ANSWER ✔✔Relatively small and icy object that orbits a star
Solar (star) System - 🧠ANSWER ✔✔Star and all the material that orbits it,
including its planets and moons
Nebula - 🧠ANSWER ✔✔Interstellar cloud of gas and/or dust
Galaxy - 🧠ANSWER ✔✔Great island of stars in space, all held together by
gravity and orbiting a common center
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STATEMENT. ALL RIGHTS RESERVED
,Universe - 🧠ANSWER ✔✔Sum total of all matter and energy. Everything
within and between all galaxies
How big is earth compared to our solar system?
Reduce the size of solar system by 10 billion. The sun is the size of a large
grapefruit. How big is Earth?
A an atom
B a tip of a ballpoint pen
C marble
D golf ball - 🧠ANSWER ✔✔B. tip of ballpoint pen
How far away is the nearest star?
Reduce the size of solar system by 10 billion. The sun is the size of a large
grapefruit and sitting in this building. Where would the nearest star to the
sun be on this scale?
A Downtown Lansing
B Chicago
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STATEMENT. ALL RIGHTS RESERVED
,C Near Baja Peninsula
D Australia - 🧠ANSWER ✔✔
Photo of Andromeda Galaxy as it looked 2.5 million years ago. When will
we be able to see what it looks like now?
A 2.5 mill years from now
B Now
C 1000 years from now - 🧠ANSWER ✔✔A 2.5 mill years from now
Why can't we see a galaxy 15 billion light years away? (Assume the
universe is 14 billion years old)
A No galaxies exist at such a great distance
B Galaxies may exist at that distance but their light would be too faint for
our telescopes to see
C Looking 15 bill light years away means looking to a time before the
universe existed - 🧠ANSWER ✔✔C Looking 15 bill light years away means
looking to a time before the universe existed
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STATEMENT. ALL RIGHTS RESERVED
, Light year - 🧠ANSWER ✔✔Distance light can travel in 1 year
What is our place in the universe? - 🧠ANSWER ✔✔Earth is part of the
solar system which is the Milky way Galaxy which is a member of the local
group of galaxies in the local supercluster
How big is the universe? - 🧠ANSWER ✔✔The observable universe dwarfs
our milky way galaxy which in turn dwarfs our solar system. scale models
can help with visualizing such distances
How is our sun moving in the milky way galaxy? - 🧠ANSWER ✔✔Sun
moves randomly relative to the other stars in the local solar neighborhood.
Stars are so far away that we cannot easily notice their motion.
Orbital motions in our milky way reveal that most of the mater in the milky
way is dark matter - 🧠ANSWER ✔✔
Raisin Bread Analogy-
Expansion of the Universe - 🧠ANSWER ✔✔Galaxies stay in the same
place but space itself expands. Distance between two objects increases
with time.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
Questions and Answers | 100% Solved
Star - 🧠ANSWER ✔✔Large glowing ball of gas that generates heat and
light through nuclear fusion
Planet - 🧠ANSWER ✔✔Moderately large object that orbits a star. Shines
by reflected light. May be rocky, icy, or gaseous in composition
Moon (or satellite) - 🧠ANSWER ✔✔Object that orbits a planet
Asteroid - 🧠ANSWER ✔✔Relatively small and rocky object that orbits a
star
Comet - 🧠ANSWER ✔✔Relatively small and icy object that orbits a star
Solar (star) System - 🧠ANSWER ✔✔Star and all the material that orbits it,
including its planets and moons
Nebula - 🧠ANSWER ✔✔Interstellar cloud of gas and/or dust
Galaxy - 🧠ANSWER ✔✔Great island of stars in space, all held together by
gravity and orbiting a common center
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
1
STATEMENT. ALL RIGHTS RESERVED
,Universe - 🧠ANSWER ✔✔Sum total of all matter and energy. Everything
within and between all galaxies
How big is earth compared to our solar system?
Reduce the size of solar system by 10 billion. The sun is the size of a large
grapefruit. How big is Earth?
A an atom
B a tip of a ballpoint pen
C marble
D golf ball - 🧠ANSWER ✔✔B. tip of ballpoint pen
How far away is the nearest star?
Reduce the size of solar system by 10 billion. The sun is the size of a large
grapefruit and sitting in this building. Where would the nearest star to the
sun be on this scale?
A Downtown Lansing
B Chicago
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
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STATEMENT. ALL RIGHTS RESERVED
,C Near Baja Peninsula
D Australia - 🧠ANSWER ✔✔
Photo of Andromeda Galaxy as it looked 2.5 million years ago. When will
we be able to see what it looks like now?
A 2.5 mill years from now
B Now
C 1000 years from now - 🧠ANSWER ✔✔A 2.5 mill years from now
Why can't we see a galaxy 15 billion light years away? (Assume the
universe is 14 billion years old)
A No galaxies exist at such a great distance
B Galaxies may exist at that distance but their light would be too faint for
our telescopes to see
C Looking 15 bill light years away means looking to a time before the
universe existed - 🧠ANSWER ✔✔C Looking 15 bill light years away means
looking to a time before the universe existed
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
3
STATEMENT. ALL RIGHTS RESERVED
, Light year - 🧠ANSWER ✔✔Distance light can travel in 1 year
What is our place in the universe? - 🧠ANSWER ✔✔Earth is part of the
solar system which is the Milky way Galaxy which is a member of the local
group of galaxies in the local supercluster
How big is the universe? - 🧠ANSWER ✔✔The observable universe dwarfs
our milky way galaxy which in turn dwarfs our solar system. scale models
can help with visualizing such distances
How is our sun moving in the milky way galaxy? - 🧠ANSWER ✔✔Sun
moves randomly relative to the other stars in the local solar neighborhood.
Stars are so far away that we cannot easily notice their motion.
Orbital motions in our milky way reveal that most of the mater in the milky
way is dark matter - 🧠ANSWER ✔✔
Raisin Bread Analogy-
Expansion of the Universe - 🧠ANSWER ✔✔Galaxies stay in the same
place but space itself expands. Distance between two objects increases
with time.
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
4
STATEMENT. ALL RIGHTS RESERVED
