Before our cosmic mapmaker SPHEREx can head to space, it has to be put through its paces here on Earth. To do that, a custom-built SUV-sized steel chamber traveled from Korea to California, where it’ll be used to test SPHEREx’s detectors and optics: https://t.co/l8PvGZHMl9 pic.twitter.com/ZKQUYaFbzR

— NASA Universe (@NASAUniverse) August 16, 2022