page_title: 1977 in the United States
section_title: September
hierarchical_section_title: 1977 in the United States / Events / September
caption_attribution_description: Voyager 1 / Voyager 2 English: NASA photograph of one of the two identical Voyager space probes Voyager 1 and Voyager 2 launched in 1977. The 3.7 metre diameter high-gain antenna (HGA) is attached to the hollow ten-sided polygonal body housing the electronics, here seen in profile. The Voyager Golden Record is attached to one of the bus sides. The angled square panel below is the optical calibration target and excess heat radiator. The three radioisotope thermoelectric generators (RTGs) are mounted end-to-end on the left-extending boom. One of the two planetary radio and plasma wave antenna extends diagonally left and down, the other extends to the rear, mostly hidden here. The compact structure between the RTGs and the HGA are the high-field and low-field magnetometers (MAG) in their stowed state; after launch an Astromast boom extended to 13 metres to distance the low-field magnetometers. The instrument boom extending to the right holds, from left to right: the cosmic ray subsystem (CRS) above and Low-Energy Charged Particle (LECP) detector below; the Plasma Spectrometer (PLS) above; and the scan platform that rotates about a vertical axis. The scan platform comprises: the Infrared Interferometer Spectrometer (IRIS) (largest camera at right); the Ultraviolet Spectrometer (UVS) to the right of the UVS; the two Imaging Science Subsystem (ISS) vidicon cameras to the left of the UVS; and the Photopolarimeter System (PPS) barely visible under the ISS. Suggested for English Wikipedia:alternative text for images: A space probe with squat cylindrical body topped by a large parabolic radio antenna dish pointing upwards, a three-element radioisotope thermoelectric generator on a boom extending left, and scientific instruments on a boom extending right. A golden disk is fixed to the body.
context_page_description: Events from the year 1977 in the United States.
context_section_description: September 4 – The Golden Dragon Massacre takes place in San Francisco, California.
  September 5 – Voyager program: Voyager 1 is launched after a brief delay.
  September 7 – Treaties between Panama and the United States on the status of the Panama Canal are signed. The U.S. agrees to transfer control of the canal to Panama at the end of the 20th century.
  September 18 – Courageous, skippered by Ted Turner, sweeps Australia in the 24th America's Cup yachting race.
  September 19
  Under pressure from the Carter Administration, President Anastasio Somoza Debayle lifts the state of siege in Nicaragua.
  Closure of steelworks in Youngstown, Ohio, is announced.
  September 21 – A nuclear non-proliferation pact is signed by 15 countries, including the United States and the Soviet Union.
  September 30 – A series of partial government shutdowns occur, finally ending in December.
caption: Voyager 1 launched Sept. 5, 1977
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