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Photo of ten VLA antennas pointing at a cloudy sky at twilight.

The Very Large Array: Astronomical Shapeshifter

Posted on January 21, 2021January 21, 2021

When the Very Large Array was completed forty years ago, it was a different kind of radio telescope. Rather…

Radio Telescopes

ALMA Takes First Step Toward Return to Service

Posted on January 14, 2021January 19, 2021

The process of returning ALMA to operational status has begun by powering up the first few antennas for the first time since the COVID-19 shutdown in March of 2021.

Radio Telescopes

NRAO and GBO Saddened at Loss of Arecibo Telescope

Posted on November 19, 2020November 20, 2020

NRAO and GBO are saddened at the announcement of the decommissioning of the Arecibo Telescope in Puerto Rico, which has a long and distinguished history of scientific accomplishment.

Radio Telescopes

VLA Sky Survey Reveals Newborn Jets in Distant Galaxies

Posted on November 19, 2020

Comparing data from VLA sky surveys made some two decades apart revealed that the black hole-powered “engines” at the cores of some distant galaxies have launched new, superfast jets of material during the interval between the surveys.

Black HolesGalaxiesRadio TelescopesSupermassive Black HolesVLASS

Featured Video: The Very Large Array at 40

Posted on October 7, 2020October 7, 2020

Join our host Melissa Hoffman as she talks about the history of the VLA and some of the remarkable objects it has discovered!

Radio Telescopes

NRAO Contest Winners Illustrate Diverse Cosmic Phenomena

Posted on October 6, 2020October 8, 2020

Winners in NRAO’s VLA 40th Anniversary Image Contest are from around the world, and their works illustrate a fascinating variety of celestial objects. Entries combined observational data from the VLA with data from optical, infrared, and X-ray telescopes, and from computer simulations.

Black HolesGalaxiesOur Sun and Solar SystemPeople and EventsRadio Telescopes

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The National Radio Astronomy Observatory is a facility of the U.S. National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
Founded in 1956, the NRAO provides state-of-the-art radio telescope facilities for use by the international scientific community. NRAO telescopes are open to all astronomers regardless of institutional or national affiliation. Observing time on NRAO telescopes is available on a competitive basis to qualified scientists after evaluation of research proposals on the basis of scientific merit, the capability of the instruments to do the work, and the availability of the telescope during the requested time. NRAO also provides both formal and informal programs in education and public outreach for teachers, students, the general public, and the media.
The U.S. National Science Foundation (NSF) is an independent federal agency created by Congress in 1950 "to promote the progress of science; to advance the national health, prosperity, and welfare; to secure the national defense..."
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