Geomagnetic Observatories
![Geomagnetic Observatories](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/Fredericksburg_Geomag_Observatories%20%281%29.jpg?itok=H3HgkXoN)
Detailed Description
Geomagnetic observatories in Fredericksburg, Virginia. This site is one of the world’s most important observatories because it has produced high-quality data for years. Credit: USGS
Geomagnetic observatories in Fredericksburg, Virginia. This site is one of the world’s most important observatories because it has produced high-quality data for years. Credit: USGS