Dark Energy Survey completes six-year mission

Scientists have only just begun to study the remarkably detailed map they created of a portion of the sky. After six years of scanning in depth about a quarter of the southern skies, and cataloguing hundreds of millions of distant galaxies, the Dark Energy Survey will finish taking data tomorrow. DES is an international collaboration that began mapping a 5000-square-degree area of the sky on August 31, 2013, in a quest to understand the nature of dark energy, the mysterious force that is acceler...