Nebulosa Iris (Catalan Wikipedia)

Analysis of information sources in references of the Wikipedia article "Nebulosa Iris" in Catalan language version.

refsWebsite

Global rank Catalan rank

1spacetelescope.org

8,860^th place

low place

1astrocruise.com

low place

low place

75^th place

51^st place

astrocruise.com

Perkins, Philip. «NGC 7023», 2005.(anglès)

nasa.gov

apod.nasa.gov

Nemiroff, Robert; Bonnell, Jerry. «APOD: 2004 November 4 - NGC 7023: The Iris Nebula», 04-11-2004.(anglès)

spacetelescope.org

«Blushing dusty nebula». [Consulta: 25 setembre 2019].