The Cosmic Landscape
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| About how many times larger is Jupiter's diameter than the Earth's? | About 10 times | |
| Why did ancients believe the planets to be special compared to stars? | Because over time the planets appear to move against background stars. | |
| What kind of unit is the light-year? | The light-year is a unit of distance. | |
| To what systems, in decreasing order of size, does Earth belong? | Local Group, Milky Way Galaxy, and Solar System | (revised) |
| Which astronomical systems are held together by gravity? | All of them are. | (revised) |
Quisition is a browser-based flashcard system that repeats old cards and introduces new ones at optimal time intervals. You can create your own card packs or use those developed by others.
