Where is Voyager?
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Transparent methodology

Data and sources

Every number has a clear meaning and a traceable source. Important claims link directly to NASA, JPL or other primary documents.

How the current value is calculated

The positions and velocities of both spacecraft come from JPL Horizons. We continuously interpolate values for the current time from those data.

This is not live spacecraft telemetry, but a calculation based on their known trajectories.

Four different quantities

  • Distance from Earth: how far the spacecraft is from Earth.
  • Distance from the Sun: how far the spacecraft is from the Sun.
  • Speed relative to the Sun: how fast the spacecraft is moving relative to the Sun.
  • Change in distance from Earth: how quickly the distance between spacecraft and Earth is increasing or decreasing.

Signal travel time

Signal time is based on the positions of Earth and the spacecraft at transmission and reception. We report both one-way and round-trip time.

Limitations

Trajectory data may be refined over time. The historical map is approximate, especially around planetary flybys, and we do not extrapolate beyond the available period.

Primary sources

NASA / JPL

Sources of illustrative site additions

Verified October 2, 2026. Links from new sections go directly to a specific item in this list. Historical observations are not mistaken for current operational status.

The geometric signal timeline uses local vector ephemeris JPL Horizons and interpolation of the same type as the tracker. The movement of the receiver includes separately in both directions. The result does not include operation time, connection planning or relativistic and station corrections.

Sources for the spacecraft tours and discovery comparisons

These primary NASA and JPL sources support the numbered components, historical engineering examples and separate discovery comparisons for each spacecraft. Historical events are described in their own period.

New material checked against primary sources ·

Two views of the Voyagers’ journey — NASA/JPL Horizons

Snapshot at

Sky coordinates come directly from the JPL Horizons observer table: astrometric ICRF, with light travel time included. The side view uses geometric heliocentric vectors sampled every 60 days and an endpoint at the stated date. This is a dated ephemeris snapshot including predicted trajectory, not live telemetry. No extrapolation is used.

Sources and methodology · JPL Horizons · Download data (JSON)