Periodic comet (Simple English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Periodic comet" in Simple English language version.

refsWebsite

Global rank Simple English rank

936^th place

799^th place

8^th place

7^th place

1minorplanetcenter.net

1,397^th place

2,148^th place

18^th place

14^th place

bbc.co.uk

news.bbc.co.uk

Whitehouse, David (28 July 1999). "BBC News | Sci/Tech | Moon burial for geologist". BBC News. London: BBC. Retrieved 27 June 2011.

harvard.edu

icq.eps.harvard.edu

"Comet names and designations". icq.eps.harvard.edu. 2011. Retrieved 27 June 2011.

minorplanetcenter.net

"Cometary Designation System". minorplanetcenter.net. 2011. Retrieved 27 June 2011.

space.com

"Comet Facts, Characteristics & Formation". space.com. 2011. Retrieved 27 June 2011.