Official websites use .gov
A
.gov website belongs to an official government
organization in the United States.
Secure .gov websites use HTTPS
A
lock (
) or https:// means you’ve safely connected to
the .gov website. Share sensitive information only on official,
secure websites.
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.
Voyager Cosmic Ray Sub SystemThe Voyager-1 CRS instrument was turned off on 02/26/2025 (DOY 56) as part of the power management plan.
The LA1 rate consists of greater than 0.5 MeV/nuc nuclei, principally protons, and is sensitive to low-energy phenomena in interplanetary space (e.g., co-rotating interaction regions, associated enhancements and solar flares).
For a list of excluded times please see Excluded Times for Voyager-1.
The Voyager-1 Cosmic Ray Subsystem instrument heater was turned off on Day 138 (05/18/2022) as part of the new power management plan.
Postscript and PDF versions are available through the links under each figure.
 Voyager-1 LA1 Rate (3 months) PS | PDF | Data Listing |
 Voyager-1 LA1 Rate (12 months) PS | PDF | Data Listing |
