This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Janksy Karl radio telescope. en Fullsize replica of the first radio telescope built by Karl Jansky and now at the National Radio Astronomical Observatory NRAO in Green Bank West Virginia NRAO Own Astrochemist File Green Banks Jansky Antena info File Green Banks Jansky Antena File Janksy Karl radio telescope