twin spacecraft

Proba-3 is designed to be "An Eclipse Machine." Its twin spacecraft will fly 150 meters apart, carefully aligned, one serving as an artificial moon, the other the observer. The long distance between observer and occulter will make Proba-3 the most efficient coronagraph ever built by humankind.

Twin spacecraft will launch to create an artificial solar eclipse

Rocket Lab Completes Integration and Testing of Twin Spacecraft for NASA Mars Mission

NASA's twin spacecraft will go to the ends of the Earth to combat climate change

Meet NASA’s Twin Spacecraft Headed to the Ends of the Earth

Rocket Lab Integrating Twin Spacecraft for Mission to Mars for NASA