Near Seneca in Montgomery County, Maryland — The American Northeast (Mid-Atlantic)
Planetary Radio Emissions Discovery Site
Photographed by Tom Fuchs, November 4, 2006
1. Planetary Radio Emissions Discovery Site Marker
In 1955 scientists Bernard Burke and Kenneth Franklin from the Carnegie Institution of Washington accidentally discovered naturally-generated radio waves from Jupiter using a 96-acre antenna array. The discovery led to greater understanding of planetary magnetic fields and plasmas and opened a new window in our exploration of the solar system.
Erected 2005 by the Maryland Historical Trust and the Maryland State Highway Administration.
Topics and series. This historical marker is listed in these topic lists: Air & Space • Science & Medicine. In addition, it is included in the Maryland Historical Trust series list. A significant historical year for this entry is 1955.
Location. 39° 4.876′ N, 77° 22.383′ W. Marker is near Seneca, Maryland, in Montgomery County. It is on River Road west of Seneca Road (Maryland Route 112). Touch for map. Marker is in this post office area: Poolesville MD 20837, United States of America. Touch for directions.
Regionally, this marker is in the Washington Metropolitan Area. It is also in the American Mid-Atlantic. Globally, it is in the North Atlantic Region, North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once one of the original Thirteen Colonies and also the Antebellum South.
Other nearby markers. At least 5 other markers are within 2 miles of this marker, measured as the crow flies: Seneca Schoolhouse (approx. 1.2 miles away); The Historic Seneca Schoolhouse (approx. 1.2 miles away); The Historic St. Paul Community Church (approx. 1.3 miles away); This is Algonkian! (approx. 1.4 miles away in
this page online
Another marker is no longer nearby. Seneca (was approx. 1.7 miles away but has been confirmed missing).
Also see . . .
1. The Discovery of Jupiter's Radio Emissions. Article by Dr. Leonard N. Garcia on the Radio Jove website. (Submitted on December 8, 2006.)
2. An Account of the Discovery of Jupitar as a Radio Source. 1959 article by K. L. Franklin in the American Astronomical Society's The Astronomical Journal, Volume 64, Number 2. (Submitted on December 8, 2006, by J. J. Prats of Powell, Ohio.)
Photographed by J. J. Prats, November 4, 2006
2. Planetary Radio Emissions Discovery Site Marker
Credits. This page was last revised on December 29, 2024. It was originally submitted on December 8, 2006, by Tom Fuchs of Greenbelt, Maryland. This page has been viewed 4,132 times since then and 61 times this year. Photos: 1. submitted on December 8, 2006, by Tom Fuchs of Greenbelt, Maryland. 2. submitted on December 8, 2006, by J. J. Prats of Powell, Ohio. • J. J. Prats was the editor who published this page.
