Voyager 1 reaches one light-day from Earth

Assembled from 52 blocks · 1 evidence · 62 related

1. Story
2. NASA has computed the moment at which Voyager 1 will be exactly one light-day from Earth: 2:16:07 a.m. Pacific time on 18 November 2026, at 16,094,799,096 miles, or 25,902,068,356 kilometres, or 173.14 astronomical units. No human-made object has ever been that far away. This is an ephemeris calculation rather than a plan or a prediction — nothing about the spacecraft changes at that instant — but it is the first time the light-day has been a meaningful unit for anything we have built. Some accounts date the crossing 17 or 18 November depending on the time zone used.
3. Knowledge
4. Voyager 1
5. The light-day as a distance
6. NASA Deep Space Network
7. Voyager 1 reaches one light-day from Earth
8. Connections
9. The light-day as a distance
10. Voyager 1
11. NASA Deep Space Network
12. NASA Deep Space Network
13. Voyager 1 reaches one light-day from Earth
14. The Grand Tour alignment
15. Voyager 2
16. Multi-Hundred-Watt radioisotope thermoelectric generator
17. Titan
18. NASA Deep Space Network
19. Gravity assist
20. Jet Propulsion Laboratory
21. Launch Complex 41, Cape Canaveral
22. Jupiter
23. Saturn
24. Titan
25. Voyager high-gain antenna
26. Plasma Wave Subsystem (PWS)
27. Titan IIIE-Centaur
28. Edward C. Stone
29. The Voyager Golden Record
30. Carl Sagan
31. Pale Blue Dot
32. The full Grand Tour is cancelled and rebuilt as a two-spacecraft mission
33. Voyager 1 launches
34. Voyager 1 closest approach to Jupiter
35. Active volcanism found on Io
36. Voyager 1 passes Saturn and Titan, and leaves the plane of the planets
37. Voyager 1 photographs the solar system from outside it
38. Voyager 1 crosses the termination shock at about 94 AU
39. Voyager 1 crosses the heliopause at 121.6 AU
40. The 2012 crossing is confirmed from plasma oscillations
41. Voyager 1's cosmic ray subsystem is switched off
42. Voyager 1's low-energy charged particle instrument due for shutdown
43. Voyager 1 reaches one light-day from Earth
44. Voyager 1
45. The light-day as a distance
46. Jet Propulsion Laboratory
47. Goldstone Deep Space Communications Complex
48. Madrid Deep Space Communications Complex
49. DSS-43, Canberra Deep Space Communication Complex
50. Voyager 1 reaches one light-day from Earth
51. Evidence
52. NASA has calculated that Voyager 1 will be one light-day from Earth at 2:16:07 a.m. PST on 18 November 2026, at 16,094,799,096 miles / 25,902,068,356 km / 173.14 AU, the first human-made object to reach that distance. V55 verification basis: every outlet attributes the figure to a NASA calculation, but no NASA statement or ephemeris was retrieved; accounts differ on whether the date is given as 17 or 18 November depending on time zone.