letters on sputnik: crossword clues

Matching Answer
Confidence
CCCP
95%
USSR
60%
NASA
60%
TASS
40%
SPACEAGE
20%
ORBIT
20%
OCTOBER
20%
APOGEE
20%
AKA
20%
IOU
20%
e.g. Greek Cheese
e.g. O?D (Use ? for unknown letters)