National Science Foundation
National Science Foundation: Star Makes Closest Approach to Black Hole in Milky Way
A star known as S0-2 made its closest approach to the supermassive black hole at the center of the Milky Way in 2018.
Curated OER
Wikipedia: National Historic Landmarks in California: Alma (Scow Schooner)
Flat-bottomed scow schooner that was built in 1891 and used in San Francisco Bay and Sacramento-San Joaquin River Delta. Now part of the San Francisco Maritime National Historical Park. Official plaque located in the San Francisco...