Explorer 20 (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Explorer 20" in English language version.

Last modified: 22:06:40, 5 June 2025 (UTC)

Ref.Un. Ref.Website

Global rank English rank

12^th place

73^rd place

1,271^st place

732^nd place

1^st place

1,562^nd place

1,346^th place

low place

4,563^rd place

3,311^th place

astronautix.com (Global: 1,562^nd place; English: 1,346^th place)

"IE". Encyclopedia Astronautica. Mark Wade. Archived from the original on 21 June 2002. Retrieved 9 June 2018.

"Explorer 20 Launch Succeeds". Aviation Week and Space Technology. McGraw Hill Publishing Company. 31 August 1964. Retrieved 28 August 2019.

"Display: Explorer 20 (IE-A) 1964-051A". NASA. 28 October 2021. Retrieved 7 November 2021. This article incorporates text from this source, which is in the public domain.
"Experiment: Cosmic Noise". NASA. 28 October 2021. Retrieved 7 November 2021. This article incorporates text from this source, which is in the public domain.
"Experiment: Fixed-Frequency Ionosonde". NASA. 28 October 2021. Retrieved 7 November 2021. This article incorporates text from this source, which is in the public domain.
"Experiment: Spherical Ion-Mass Spectrometer". NASA. 28 October 2021. Retrieved 7 November 2021. This article incorporates text from this source, which is in the public domain.

McDowell, Jonathan (21 July 2021). "Launch Log". Jonathan's Space Report. Retrieved 7 November 2021.

"IE". Encyclopedia Astronautica. Mark Wade. Archived from the original on 21 June 2002. Retrieved 9 June 2018.