ESA spacecraft

Gaia (retired)

Open in Ouranos

Retired 2025-03-27 after mapping nearly two billion stars; switched off and sent from L2 into its own orbit round the Sun (ESA).

Measured

Agency: ESA
Retired: 2025-03-27
From the Earth today: 0.671 AU (100 million km)

How far, from the Earth

0.671 AU. To cross it:

Light5 minutes 35 seconds
Voyager 1's speed2.26 months
Driving at 100 km/h115 years

Voyager 1 at the speed it moved outward over the year to 2026-10-25 (JPL Horizons). Driving: nonstop, never refuelling.

Facts

JPL Horizons trajectory round the Sun: worst miss 45 km on the dates it was checked against (median 37 km); between those dates as much as about 134 km. Dates after the data was fetched are Horizons' predictions, which it revises as a mission flies.

Where this comes from

ESA
Spacecraft trajectories: JPL Horizons, NASA/JPL-Caltech; each mission's agency credited on its card.

Every catalogue Ouranos draws is credited on the credits page.