When the Sun's reach touches Earth

As a recognized space weather center of excellence, APL has fostered collaborations and built state-of-the-art physics-based and machine-learning models to set the groundwork for predicting such severe space weather events. APL has built and operated dozens of instruments and NASA spacecraft missions to better understand space weather in general

These missions include STEREO, which has provided unprecedented 3D views of powerful coronal mass ejections at the Sun; the Van Allen Probes, which provided scientists with invaluable data for predicting changes in Earth’s radiation belts; and Parker Solar Probe, whose unparalleled orbit near the Sun will transform our understanding and forecast capabilities of space weather events.


APL has designed, built and operated more than 70 innovative spacecraft over its six decades of spaceflight experience. Click below to learn about some of the missions that made revolutionary discoveries, and spacecraft that will push the boundaries of exploration and investigate outstanding scientific mysteries.


Scientists and engineers at APL have designed, built and operated more than 300 novel space instruments and methods to conduct cutting-edge research and make groundbreaking discoveries. Click below to learn about some of these instruments and their role in shaping our understanding of space and the solar system.


Go inside APL’s space missions and research, and check out the latest news, features and discoveries from the teams that are probing mysteries from the Sun to the edge of the solar system and beyond.