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March 9, 2026: Temporary and Intermittent Outages

The services of this website will be offline for at least one day in March while the primary servers are moved to another building at NASA Goddard Space Flight Center (GSFC). The tentative move date is March 9 but could slip. In the days following March 9 users should expect temporary and intermittent interruptions to services as they come back online.

NASA Logo Voyager Cosmic Ray Sub System

Note: Corrections have been applied to the Voyager 1 flux data from DOY 145/2022 (May 25) and Voyager 2 flux data from DOY 178/2019 (June 27) due to the turn off of the Voyager CRS
Heaters. V1 Flux data from May 18 - 24/2022 and V2 Flux data from June 9 - 26/2019 are not available.

See Voyager Temperature Corrections for additional information.

The data units are "Particles / M^2-S-Sr-MeV/nuc".

 

Note: Hours and Minutes are set to zero (0) for the Start and End times (e.g. an End Time of 2020/01/20 is 2020/01/19 23:59:59).
Voyager-1 Hydrogen Bins
Voyager-1 Helium Bins
Voyager-2 Hydrogen Bins
Voyager-2 Helium Bins