New U.S. Observatory in Chile

A new U.S. astronomy and astrophysics facility is expected to go online in mid-2025 on a mountaintop in Chile. The Vera C. Rubin Observatory is named after the American astronomer whose work convinced scientists that dark matter is real.

Since then, scientists have determined that dark matter makes up more than 80 percent of all matter in the universe. Using the largest digital camera ever built, the observatory will scan the southern hemisphere sky for 10 years and create an ultra-wide, ultra-high-definition time-lapse movie of the sky to help scientists better understand dark energy and dark matter, create an inventory of our solar system, map the Milky Way galaxy and study objects that change position or brightness over time.