Humanity's most distant object, on a fitted trajectory from JPL Horizons. Numbers below are live estimates from that trajectory; dated facts are labelled with their NASA source.
Live estimate · JPL Horizons
—km
from Earth · live estimate
—mi
from Earth
—AU
from the Sun
—
one-way light time
—km/s
speed · heliocentric
—km/s
receding from Earth
—
until one light-day · NASA/JPL time
—days
in flight since 5 Sep 1977
Spacecraft health NASA · updated 17 Apr 2026
Instrument
Voyager 1
Voyager 2
Magnetometer (MAG)
On
On
Plasma Wave Subsystem (PWS)
On
On
Cosmic Ray Subsystem (CRS)
Off · 25 Feb 2025, to save power
On
Low-Energy Charged Particles (LECP)
Off · 17 Apr 2026, to save power
Off · 24 Mar 2025
Plasma Science (PLS)
Off · 2007, degraded
Off · 26 Sep 2024
Cameras (ISS)
Off · 14 Feb 1990
Off · 1989
UVS · IRIS · PPS · PRA
Off · 1980–2016
Off · 1991–2008
Power: three radioisotope generators, output falling about 4 watts a year. NASA's most recent update: power-conservation work finished in September 2026 and a 48-hour communications pause on 20 Oct 2026 resolved itself. Source: NASA Voyager blog, 29 Oct 2026.
Upcoming catalysts every item links to NASA/JPL
Mission updates NASA blog
Milestones
Launch from Cape Canaveral on a Titan IIIE-Centaur.past
Jupiter closest approach, 349,000 km.past
Saturn and Titan flyby; path bent 35° out of the ecliptic.past
Pale Blue Dot and the Family Portrait; cameras off afterwards.past
Crossed the heliopause into interstellar space at 121 AU.past
First human-made object one light-day from Earth, 10:16:07 UTC (2:16:07 a.m. PST).next
Distance at that moment: about 25.902 billion km (16.094 billion miles).
Passes within about 1.6 light-years of the star Gliese 445 (our own straight-line projection from Gaia DR3 motion: about 1.9 ly in year —).projectedNASA source ↗