North Arroyo in Pasadena in Los Angeles County, California — The American West (Pacific Coastal)
Voyager 1
Photographed by Craig Baker, October 11, 2026
1. Voyager 1 Marker
Voyager 1 Crosses the Termination Shock, December 16, 2004
This occurs 24 years after passing Saturn. The crossing also clarifies the location of the Termination Shock, the inner boundary of the Heliosheath.
V1 Distance from the Sun:
94 AU, 8.7B Miles, 14B KM
Topics. This historical marker is listed in these topic lists: Air & Space • Exploration • Science & Medicine. A significant historical year for this entry is 2004.
Location. 34° 11.987′ N, 118° 10.396′ W. Marker is in Pasadena, California, in Los Angeles County. It is in North Arroyo. It can be reached from Oak Grove Drive 0.3 miles north of Foothill Boulevard. Located on the campus of Jet Propulsion Laboratory, only accessible with prior arrangements. Touch for map. Marker is at or near this postal address: 4800 Oak Grove Dr, La Canada Flintridge CA 91011, United States of America. Touch for directions.
Regionally, this marker is in Greater Los Angeles and in the Transverse Ranges. It is also on the American Pacific Coast. Globally, it is in North America, on the Ring of Fire, on the Pacific Rim, in the Western Hemisphere,
this page online
Other nearby markers. At least 8 other markers are within 2 miles of this marker, measured as the crow flies: Space Flight Operations Facility (about 400 feet away, measured in a direct line); Jet Propulsion Laboratory (about 500 feet away); The Voyager Spacecraft - Interplanetary Explorers (about 600 feet away); Twenty-Five-Foot Space Simulator (approx. 0.2 miles away); O. Oliver Goodall (approx. 0.7 miles away); Who was Robert Owens of El Prieto Canyon? (approx. 0.8 miles away); Buffalo Soldiers (approx. 0.9 miles away); Owen Brown (approx. 1.4 miles away). Touch for a list and map of all markers in Pasadena.
Regarding Voyager 1. Voyagers 1 and 2 were launched in 1977 to meet a solar-system alignment that occurs only once every 176 years. Both spacecraft sent back valuable pictures and information of Jupiter and Saturn and their satellites.
Photographed by Craig Baker, October 11, 2026
2. Voyager 1 Marker
courtesy NASA
3. Voyager 1
Credits. This page was last revised on October 15, 2026. It was originally submitted on October 13, 2026, by Craig Baker of Sylmar, California. This page has been viewed 10 times since then. Photos: 1, 2, 3. submitted on October 13, 2026, by Craig Baker of Sylmar, California.
