Space News & Blog Articles
Tune into the SpaceZE News Network to stay updated on industry news from around the world.
Proba-3 tries formation flying on the ground
![LEDs active on Proba-3's Coronagraph spacecraft](https://www.esa.int/var/esa/storage/images/esa_multimedia/images/2024/06/leds_active_on_proba-3_s_coronagraph_spacecraft/26188014-1-eng-GB/LEDs_active_on_Proba-3_s_Coronagraph_spacecraft_card_full.gif)
The two Proba-3 satellites were set facing each other across a cleanroom as cameras, LEDs, a laser and shadow sensors were activated in turn, testing the systems that will let the pair sense their precise positions relative to each other, allowing them to line up precisely in orbit down to a single millimetre.