Across
- 4. A technique to find the distance to a nearby star using angles and triangles.
- 6. A roughly spherical ball of matter that orbits a star.
- 11. A device to measure the altitude of something in the sky.
- 12. A device to measure the spectrum of a star.
- 15. Describes the size of a light wave.
- 17. Telescope that uses a lens to focus light.
- 18. The shape of all orbits.
- 21. Meaning "same time as Earth", referring to a type of satellite.
- 25. How "clear/detailed" your astronomical image is.
- 26. The type of spectrum from a star.
- 27. The location of something in degrees relative to North
Down
- 1. A device to measure the azimuth of something in the sky.
- 2. A model of the universe where the Earth is at the center.
- 3. Type of rocket that drops fuel tanks as they are empty.
- 5. ______ motion, when planets appear to "go backwards" in the sky.
- 7. An "effect" that causes galaxies to look more red when they move away from us.
- 8. The height in degrees of something above the horizon.
- 9. A unit of measurement that is the distance from the Sun to Earth.
- 10. A ball of hot gas and plasma that produces energy through nuclear fusion.
- 13. A rocky and icy chunk of matter that is sometimes seen in the sky with a characteristic tail.
- 14. Telescope that uses a curved mirror to focus light.
- 16. A model of the universe where the Sun is at the center.
- 19. A network of satellites that helps us navigate on Earth.
- 20. Any naturally-occurring matter that orbits a planet.
- 22. The type of spectrum from a hot gas.
- 23. A light "fingerprint" of an element or star.
- 24. The top part of a rocket (the purpose of the launch!)
- 27. A rocky chunk of matter. Many are found in our solar system.