Voyager 1's cosmic ray subsystem is switched off

Assembled from 63 blocks · 1 evidence · 63 related

1. Story
2. Engineers at the Jet Propulsion Laboratory commanded off the instrument that had helped identify the heliopause crossing thirteen years earlier, as part of a plan to stretch the falling power budget. The command took over a day to arrive. Three science instruments remained running on the spacecraft afterwards.
3. Knowledge
4. Voyager 1
5. Multi-Hundred-Watt radioisotope thermoelectric generator
6. Cosmic Ray Subsystem (CRS)
7. Jet Propulsion Laboratory
8. Voyager 1's cosmic ray subsystem is switched off
9. Connections
10. Cosmic Ray Subsystem (CRS)
11. Voyager 1
12. Multi-Hundred-Watt radioisotope thermoelectric generator
13. Jet Propulsion Laboratory
14. Voyager 2
15. Voyager 1's cosmic ray subsystem is switched off
16. The "Big Bang" power manoeuvre on Voyager 2
17. The Grand Tour alignment
18. Voyager 2
19. Multi-Hundred-Watt radioisotope thermoelectric generator
20. Titan
21. NASA Deep Space Network
22. Gravity assist
23. Jet Propulsion Laboratory
24. Launch Complex 41, Cape Canaveral
25. Jupiter
26. Saturn
27. Titan
28. Voyager high-gain antenna
29. Plasma Wave Subsystem (PWS)
30. Titan IIIE-Centaur
31. Edward C. Stone
32. The Voyager Golden Record
33. Carl Sagan
34. Pale Blue Dot
35. The full Grand Tour is cancelled and rebuilt as a two-spacecraft mission
36. Voyager 1 launches
37. Voyager 1 closest approach to Jupiter
38. Active volcanism found on Io
39. Voyager 1 passes Saturn and Titan, and leaves the plane of the planets
40. Voyager 1 photographs the solar system from outside it
41. Voyager 1 crosses the termination shock at about 94 AU
42. Voyager 1 crosses the heliopause at 121.6 AU
43. The 2012 crossing is confirmed from plasma oscillations
44. Voyager 1's cosmic ray subsystem is switched off
45. Voyager 1's low-energy charged particle instrument due for shutdown
46. Voyager 1 reaches one light-day from Earth
47. Voyager 1
48. Voyager 2
49. Plutonium-238
50. Voyager 1 launches
51. Voyager 1's cosmic ray subsystem is switched off
52. Voyager 2's low-energy charged particle instrument is switched off
53. Voyager 1's low-energy charged particle instrument due for shutdown
54. The "Big Bang" power manoeuvre on Voyager 2
55. Voyager 1
56. Voyager 2
57. NASA Deep Space Network
58. The full Grand Tour is cancelled and rebuilt as a two-spacecraft mission
59. Voyager 1's cosmic ray subsystem is switched off
60. Voyager 2's low-energy charged particle instrument is switched off
61. The "Big Bang" power manoeuvre on Voyager 2
62. Evidence
63. Voyager 1's cosmic ray subsystem was switched off on 25 February 2025 and Voyager 2's low-energy charged particle instrument on 24 March 2025; both spacecraft lose about four watts of generator output per year; three science instruments continued to operate on each; Voyager 1's low-energy charged particle instrument was to run through 2025 and be switched off in 2026, and Voyager 2's cosmic ray subsystem was scheduled for shutdown in 2026, with the plan expected to keep at least one instrument running on each spacecraft into the 2030s. V55 verification basis: the release was not fetched — jpl.nasa.gov and science.nasa.gov are both blocked by this session's network egress proxy — but search results carried these specific figures and dates and attributed them to this release.