AS101 Midterm 1 AS101 Midterm Exams
Study online at https://quizlet.com/_2131b7
1. consists of the Sun, the planets and their moons, and solar system
countless smaller objects
2. the galaxy our solar system belongs to Milky Way Galaxy
3. a great island of stars in space, containing more than galaxy
100 billion stars
4. groups of galaxies with more than a few dozen mem- galaxy clusters
bers
5. group of about 40 galaxies including the milky way local group
6. the regions in which galaxies and galaxy clusters are superclusters
most tightly packed
7. the sum total of all matter and energy, encompassing universe
the superclusters and voids and and everything within
them
8. 1 is Earth's average distance from the sun. = to about astronomical unit (AU)
150 million km
9. the distance that light can travel in 1 year. = to about light-year
10 trillion km
10. what we generally use light-years to describe the dis- stars and galaxies
tances of
11. what we commonly describe distances in AU within solar system
this
12. a large, glowing ball of gas that generates heat and star
light through nuclear fusion in its core
1/9
, AS101 Midterm 1 AS101 Midterm Exams
Study online at https://quizlet.com/_2131b7
13. a moderately large object that orbits a star and shines planet
primarily by reflecting light from its star
14. an object that orbits a planet moon
15. also can be a moon because it orbits a planet satellite
16. a relatively small and rocky object that orbits a star asteroid
17. a relatively small and ice-rich object that orbits a star comet
18. an asteroid, comet, or other object that orbits a star small solar system body
but is too small to qualify as a planet or dwarf planet
19. an object that meets the first 2 criteria of being a dwarf planet
planet but has not cleared its orbital path
20. a star and any planets and other materials that orbit star system
it
21. a collection of galaxies bound together by gravity cluster of galaxies
22. the portion of the entire universe that can be seen observable universe
from Earth, at least in principle.
23. the spinning of an object around its axis rotation
24. the orbital motion of one object around another due orbit (revolution)
to gravity
25. the increase in the average distance between galaxies expansion (of the uni-
as time progresses verse)
26. the boundary of our observable universe 14 billion light-years
2/9
Study online at https://quizlet.com/_2131b7
1. consists of the Sun, the planets and their moons, and solar system
countless smaller objects
2. the galaxy our solar system belongs to Milky Way Galaxy
3. a great island of stars in space, containing more than galaxy
100 billion stars
4. groups of galaxies with more than a few dozen mem- galaxy clusters
bers
5. group of about 40 galaxies including the milky way local group
6. the regions in which galaxies and galaxy clusters are superclusters
most tightly packed
7. the sum total of all matter and energy, encompassing universe
the superclusters and voids and and everything within
them
8. 1 is Earth's average distance from the sun. = to about astronomical unit (AU)
150 million km
9. the distance that light can travel in 1 year. = to about light-year
10 trillion km
10. what we generally use light-years to describe the dis- stars and galaxies
tances of
11. what we commonly describe distances in AU within solar system
this
12. a large, glowing ball of gas that generates heat and star
light through nuclear fusion in its core
1/9
, AS101 Midterm 1 AS101 Midterm Exams
Study online at https://quizlet.com/_2131b7
13. a moderately large object that orbits a star and shines planet
primarily by reflecting light from its star
14. an object that orbits a planet moon
15. also can be a moon because it orbits a planet satellite
16. a relatively small and rocky object that orbits a star asteroid
17. a relatively small and ice-rich object that orbits a star comet
18. an asteroid, comet, or other object that orbits a star small solar system body
but is too small to qualify as a planet or dwarf planet
19. an object that meets the first 2 criteria of being a dwarf planet
planet but has not cleared its orbital path
20. a star and any planets and other materials that orbit star system
it
21. a collection of galaxies bound together by gravity cluster of galaxies
22. the portion of the entire universe that can be seen observable universe
from Earth, at least in principle.
23. the spinning of an object around its axis rotation
24. the orbital motion of one object around another due orbit (revolution)
to gravity
25. the increase in the average distance between galaxies expansion (of the uni-
as time progresses verse)
26. the boundary of our observable universe 14 billion light-years
2/9
