Katherine Joy

Earth and Planetary Sciences

1. Regolith 100%
2. Breccia 75%
3. Lunar Meteorite 61%
4. Basalt 53%
5. Petrography 50%
6. Lunar Surface 41%
7. Africa 39%
8. Olivine 34%
9. Landing Site 32%
10. Solar System 29%
11. Mare Basalt 26%
12. Impact Melt 24%
13. Pyroxene 24%
14. X Ray Spectrometers 24%
15. Magma 21%
16. Lava Flow 20%
17. Anorthosite 20%
18. Carbonaceous Chondrite 20%
19. Trace Element 16%
20. United Kingdom 16%
21. Remote Sensing 16%
22. Zircon 15%
23. Petrogenesis 15%
24. Lunar Crust 14%
25. Earth's Moon 14%
26. Rare Gas 13%
27. X-Ray Fluorescence Spectroscopy 12%
28. Antarctic Region 12%
29. Granulite 12%
30. Calcium Phosphate 12%
31. Lunar Soil 12%
32. Ilmenite 12%
33. Protolith 11%
34. European Space Agency 10%
35. Meteor 9%
36. Isotopic Composition 9%
37. Chondrite 9%
38. Rare Earth Element 8%
39. Ejecta 8%
40. Laser Ablation Inductively Coupled Plasma Mass Spectrometry 7%
41. Silicate 7%
42. Volcanism 7%
43. Earth-Moon System 6%
44. Sample Return Mission 6%
45. Reflectance 6%
46. Space Mission 6%
47. Solar Wind 6%
48. Lunar Prospector 6%
49. Achondrite 5%
50. Pigeonite 5%