invented refracting telescope for astronomy

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
invented refracting telescope for astronomy	1.99	0.3	8642	41	43
invented	0.82	0.6	3458	22	8
refracting	1.17	0.4	749	11	10
telescope	0.14	0.7	7374	92	9
for	1.45	0.7	5996	71	3
astronomy	1.47	1	2479	11	9

Keyword	CPC	PCC	Volume	Score
invented refracting telescope for astronomy	1.97	0.1	3243	55
who made the refracting telescope	1.34	0.7	366	37
when was the first refracting telescope made	1.57	1	9237	75
invented the reflecting telescope	0.48	0.9	568	11
reflecting telescope was invented by	0.49	0.7	5634	2
inventor of reflecting telescope	1.03	0.4	25	19
who created the first reflecting telescope	1.46	0.4	4572	70
first reflecting telescope inventor	1.23	0.3	6712	81
who made the first reflecting telescope	1.65	0.5	4270	37
invention of the telescope	0.68	0.5	1357	32
who made the reflecting telescope	0.03	0.6	6838	19