Visualizations by
Tom Bridgman
Released on November 18, 2019
LISA Pathfinder, a mission led by ESA (the European Space Agency) that included NASA contributions, successfully demonstrated technologies needed to build a future space-based gravitational wave observatory, a tool for detecting ripples in space-time produced by, among other things, merging black holes. A team of NASA scientists leveraged LISA Pathfinder's record-setting sensitivity to map microscopic dust shed by comets and asteroids.
These animations follow the trajectory of LISA Pathfinder from Earth to its working "halo" orbit around Sun-Earth L1, a gravitational balance point about 930,000 miles (1.5 million kilometers) from Earth in the sun's direction, and show the locations of 54 dust impacts detected during the mission.