NASA's SPHEREx mission aims to map 450 million galaxies and 100 million stars 

 NASA has begun construction has started on SPHEREx, a new extraordinary mission that will map the sky in unprecedented detail and color. 

https://cdn.mos.cms.futurecdn.net/ddUnjv3xCRL2hzmJwuCR4Y.png

https://www.space.com/nasa-spherex-map-450-million-galaxies