when did clyde tombaugh discover pluto

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did clyde tombaugh discover pluto	0.43	0.2	7845	6	38
when	0.38	0.3	4857	56	4
did	0.23	0.5	3889	82	3
clyde	0.36	0.7	8564	89	5
tombaugh	1.75	0.7	6578	17	8
discover	0.2	0.4	7929	47	8
pluto	1.47	0.6	9053	43	5

Keyword	CPC	PCC	Volume	Score
when did clyde tombaugh discover pluto	0.03	0.6	9165	60
how did clyde tombaugh discover pluto	1.16	0.1	4813	61
where did clyde tombaugh discover pluto	1.43	0.9	1709	6
what year did clyde tombaugh discover pluto	0.14	0.8	5918	89
pluto discovered by clyde tomba	1.03	0.8	9301	97
pluto discovered by clyde tomb	0.28	0.8	2548	98
pluto discovered by clyde tom	0.81	0.3	5466	35
pluto discovered by clyde	0.21	0.8	5646	9
pluto ninth planet discovery tombaugh	1.97	0.4	7613	40
pluto discovered by cl	0.16	0.9	8315	68
discovery of pluto wikipedia	0.79	0.4	914	78
the discovery of pluto	1.2	0.9	8970	35
discovery year of pluto	1.49	0.2	3210	11
how was pluto discovered in 1930	1.96	0.8	3637	34
pluto who discovered it	1.98	0.5	2301	54
discovered pluto in 1930	1.01	0.4	2383	52
what year pluto discovered	0.06	0.8	6786	21