Probe
STEREO-A
STEREO-A is a spacecraft out in the solar system.
Its year is three weeks shorter than ours, so it slowly laps Earth, watching the Sun’s eruptions from the side; it last passed us in August 2023.
See it live
Where it is right now is on the live 3D map.
How the map draws it
Drawn from a published model of STEREO-A.