- Apollo 15 Hammer-Feather Drop (youtube.com)
At the end of the last Apollo 15 moon walk, Commander David Scott (pictured above) performed a live demonstration for the television cameras. He held out a geologic hammer and a feather and dropped them at the same time. Because they were essentially in a vacuum, there was no air resistance and the feather fell at the same rate as the hammer, as Galileo had concluded hundreds of years before - all objects released together fall at the same rate regardless of mass.
- St. Patrick’s Catholic Church, San Francisco (Wikipedia)
St. Patrick’s Catholic Church is a Roman Catholic church in San Francisco, California, founded in 1851. It is located at 756 Mission Street, between 3rd and 4th streets, across the street from Yerba Buena Gardens in the heart of the South of Market district.