Pisgah Astronomical Research Institute

Pisgah Astronomical Research Institute (PARI; /ˈpæriː/ PAIR-ee) is a non-profit astronomical observatory located in the Pisgah National Forest near Balsam Grove, North Carolina. PARI operates multiple radio telescopes and optical telescopes for research and teaching purposes. The site is a Dark Sky Park, certified by DarkSky International in 2020.^[1] It is one of only two Dark Sky Parks in North Carolina. The observatory is affiliated with the University of North Carolina system through the Pisgah Astronomical Research and Science Educational Center (PARSEC). PARI is open to the public by appointment.^[2]

PARI is located at the site of the former Rosman Satellite Tracking Station, which was established by the National Aeronautics and Space Administration (NASA) in 1962. The site was part of the worldwide Spacecraft Tracking and Data Acquisition Network and an integral communications link for the crewed space programs Project Gemini and Project Apollo. The Rosman Satellite Tracking Station, under NASA, was an unclassified facility and the site itself was open to the public.^[3][4][5]

The facility was transferred to the National Security Agency (NSA) in 1981. Known as the Rosman Research Station, it was used as a signals intelligence gathering facility. The site was closed by the NSA in 1995 and transferred to the United States Forest Service.^[6]

After several years of inactivity, the federal government proposed to dismantle the facility. Recognizing the utility of the site, a small group of interested scientists and businessmen formed a not-for-profit foundation, which acquired the site in January 1999. It has continued capital investment at the facility, enabling updates of the equipment for astronomical observation purposes. A staff of professional astronomers, engineers, and other scientists work at the observatory.

In the early morning hours of Dec 24th, 2012, the institute was burglarized. Its collection of about 100 meteorites, valued at a minimum of $80,000 and with specimens weighing up to 80 pounds (36 kg), was stolen, along with about $100,000 worth of TVs, monitors, projectors, microscopes, and other scientific equipment.^[7] Much of the stolen property, including the meteorite collection, was recovered within a week.^[8]

In 2023, The History Press published Pisgah Astronomical Research Institute: An Untold History of Spacemen & Spies by local North Carolina author and former CIA senior executive, Craig Gralley. This nonfiction book explores the site’s past as a NASA satellite tracking station during the Space Race and as a top-secret NSA signals intelligence gathering facility during the Cold War.^[9] It details PARI’s inception and current mission of public STEM research and education.^[10]

PARI hosts research and study programs with Furman University, Clemson University, Virginia Tech, South Carolina State University and Duke University. The PARI site has hosted several professional astronomy meetings, including the Small Radio Telescope Conference in August 2001, the Gamma-Ray Bursts Today and Tomorrow Conference in August 2002 and the Workshop on a National Plan for Preserving Astronomical Photographic Plates in November 2007.^[11]

PARI hosts several educational opportunities, including the Duke University Talent Identification Program. PARI also sponsors astronomy educational programs using the portable StarLab planetarium. These have been presented to more than 40,000 people in Western North Carolina.

The principal radio research instruments at PARI are two 26-meter radio telescopes and a 4.6-meter radio telescope named Smiley. These have been adapted for precision tracking of celestial radio sources using multiple frequencies. Smiley is used for remote classroom teaching of astronomy by students in the US and worldwide. According to PARI myth and legend, Smiley was given its pleasant face around 1982 as a greeting to overflying foreign surveillance satellites—particularly those belonging to the Soviet Union.^[3]

PARI is home to the Astronomical Photographic Data Archive (APDA), a facility designed to collect, preserve, and store astronomical photographic plates. These plates served as the primary recording medium for astronomy data from the late 1800s until the 1980s. Despite their proclaimed historic and scientific value,^[12][13][14] many of the estimated two million or more plates across the U.S. are in jeopardy of being destroyed due to lack of storage space, personnel, and maintenance.^[15][16] PARI’s APDA is the second largest plate repository in the world; boasting more than 460,000 glass plates from 83 observatories around the globe.^[3] The ultimate goal of APDA is to digitize the entire plate collection and create an online database accessible to the global community of scientists, researchers, and students.^[17] As part of a citizen science project initiated at PARI, referred to as Stellar Classification Online Public Exploration (SCOPE), internet users are able to observe and classify stars from digitized APDA plates.^[18]

An Exhibit Gallery displays a collection of rare meteorites and minerals, as well as NASA Space Shuttle artifacts. Many of the latter are from space flights.

• Redstone rocket engine on display
• Knightia fossils from the Green River Formation
• Carboniferous Ferns
• Petrified Wood
• Brazilian Amethyst
• Toluca meteorite
• Seymchan meteorite
• Canyon Diablo Meteorite
• Fragment of D'Orbigny meteorite
• Agates collected between 1920 - 1950

• List of astronomical observatories
• List of radio telescopes

• Goldman, Stuart J. "Mission Possible: The Promise of Pisgah." Sky & Telescope. October 2001:42.
• Hargreaves, Lynley. "Spy Station Retooled into Astronomy Institute". Physics Today. March 2001 Volume 54, number 3.

• Pisgah Astronomical Research Institute (PARI)
• Virginia Tech Eight Meter Transient Array