Astronomical Data Center

The answers to the ADC Word Finding Puzzle are shown below.

------------------ The Clues -------------------
1. One packet of electromagnetic radiation: [ PHOTON ]
2. The VLA uses this type of telescope: [ RADIO ]
3. The difference in a star's brightness through two filters is a [ COLOR ] index.
4. Electromagnetic wavelengths just shorter than the visible: [ ULTRAVIOLET ]
5. Photographic [ PLATE ]
6. Measurements of objects' brightness in multiple filter bandpasses: [ PHOTOMETRY ]
7. Starlight passing though interstellar gas will show [ ABSORPTION ] lines.
8. Gas falling into black holes is often detected at [ XRAY ] wavelengths.
9. Apparent angular motion of a star across the line of sight per year: [ PROPER MOTION ]
10. Stars' chemical compositions, radial velocities, and rotation are studied using [ SPECTROSCOPY ].
11. Apparent shift in position of a nearby star due to Earth's orbital motion: [ PARALLAX ]
12. Bright lines in the spectrum of a star are known as [ EMISSION ] lines.
13. Electromagnetic wavelengths just longer than the visible: [ INFRARED ]
14. The most energetic form of electromagnetic radiation: [ GAMMA RAY ]
15. Shorthand for the three-filter photometry system developed by Johnson: [ UBV ]
16. His law is a mathematical progression matching the spacing of the planets: [ BODE ]
17. Velocity component determined from Doppler shift: [ RADIAL ]
18. One component of interstellar clouds: [ GAS ]
19. Solid-state electronic detector common in astronomy: [ CCD ]
20. High-energy particle that strikes the Earth's atmosphere: [ COSMIC RAY ]
21. Fundamental force that binds binary star systems: [ GRAVITY ]
22. The Sun and Moon's pull on Earth's bulge causes Earth's axis to [ PRECESS ].

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