when did lowell observatory discover pluto

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when did lowell observatory discover pluto	1.1	0.4	3186	16	42
when	1.61	0.3	5991	7	4
did	0.34	0.9	7582	35	3
lowell	0.58	0.6	9913	93	6
observatory	1.08	0.6	3598	30	11
discover	1.2	0.9	3717	23	8
pluto	2	0.9	3298	30	5

Keyword	CPC	PCC	Volume	Score
when did lowell observatory discover pluto	1.55	0.6	5018	99
did percival lowell discover pluto	1.6	1	5160	89
what observatory discovered pluto	1.3	0.8	4493	1
at which observatory was pluto discovered	0.58	0.1	4954	7
when did we discover pluto	1.64	1	9747	82
what observatory found pluto	0.58	0.8	8897	25
discovered pluto in 1930	0.24	0.2	6682	37
when was pluto discovered	1.37	0.8	550	31
discovery year of pluto	0.2	1	1359	83
what year pluto discovered	0.11	1	1186	59
which astronomer discovered pluto	0.89	0.1	3365	77
discovery of pluto 1930	0.74	0.6	9173	43
the discovery of pluto	1.72	0.2	2401	61
date they discovered pluto	0.01	0.4	6420	72
who first observed pluto	0.83	0.7	3073	85