Following the stars

2. A star located at the end of the handle of the Little Dipper, in the constellation Ursa Minor.
4. Greek astronomer and geographer whose geocentric model of the universe dominated cosmological theory until the Renaissance.
5. material consisting of threads of cotton, hemp, or other material twisted together to form a thin length.
6. bob: a bob of lead or other heavy material forming the weight of a plumb line.
8. an instrument used for taking angular measurements of altitude in astronomy and navigation.
10. an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
11. the outside limit of an object, area, or surface; a place or part farthest away from the center of something.
12. a beam or bar fixed or placed across something else.
14. the top or highest part of something, especially one forming a point.
15. an instrument with a graduated arc of 60° and a sighting mechanism, used for measuring the angular distances between objects and especially for taking altitudes in navigation.
16. a broad blade attached to a rotating axis or wheel which pushes or is pushed by wind or water and forms part of a machine or device such as a windmill, propeller, or turbine.
17. the line at which the earth's surface and the sky appear to meet.

1. a body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
2. something that is extremely small or insignificant.
3. the space between two intersecting surfaces at or close to the point where they meet.
6. a place where someone or something is located or has been put.
7. an instrument formerly used at sea for taking the altitude of a celestial body.
9. the throwing back by a body or surface of light, heat, or sound without absorbing it.
10. a set of things working together as parts of a mechanism or an interconnecting network.
13. To carve, cut, or etch into a material.