#51 Puzzle

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PSSTENALPNOILEHIREPU DNUTATIONGISPULSARUR YVINLIYCSOSHTZYQMMRZ LSKJWNVZOEIDKAOPZOGY RADIATIONSXTCQRDVEGC ASTROLABETMTAVUEIMCE PHOTOMETRYFOATRAXAYO NOZASTEROIDPLNLDSXCL NEOYROTAVRESBOTUAAWS DSBZAKREDSHIFTGLCJRU YHRUOBERTEQCBLAYJCTC JGUSLENXBTKGNGALYNOI KAWERAECLIPSEZENITHN ELYDETSVTRDCESRAPLNR PIHKDENAIOASTRONOMYE LLKJNMECBETFIHSEULBP EEQOAOWURTFQRIDANGEO ROOGLCTUOEROETEMNVCC GMBFKWOMMMAPHELIONLJ EYVPLANETARIUMKLFBIK KNIETSNIEVBJXWMWKRPO SPECTROSCOPYAGRAVITY ZSEPOCSELETHAURORAIQ HHUBBLESYRTEMORTSACB IDKNOISSECERPTRANSIT
1.
COMET
2.
GALAXY
3.
PLANET
4.
STAR
5.
SUN
6.
MOON
7.
ASTEROID
8.
NEBULA
9.
METEOR
10.
ORBIT
11.
TELESCOPE
12.
OBSERVATORY
13.
ECLIPSE
14.
ASTRONOMY
15.
COPERNICUS
16.
GALILEO
17.
KEPLER
18.
HUBBLE
19.
HAWKING
20.
ZENITH
21.
NADIR
22.
METEORITE
23.
QUASAR
24.
PULSAR
25.
PARSEC
26.
REDSHIFT
27.
BLUESHIFT
28.
COSMOLOGY
29.
NEWTON
30.
EINSTEIN
31.
ASTROLABE
32.
SEXTANT
33.
PLANETARIUM
34.
SPECTROSCOPY
35.
PHOTOMETRY
36.
ASTROMETRY
37.
ECLIPTIC
38.
ZODIAC
39.
PRECESSION
40.
NUTATION
41.
APHELION
42.
PERIHELION
43.
TRANSIT
44.
OCCULTATION
45.
AURORA
46.
LANDER
47.
ROVER
48.
GRAVITY
49.
RADIATION
50.
VACUUM