According to Alemi and Stevenson, in models of the early solar system it is nearly impossible for Venus to avoid a big hit. Most likely, Venus was slammed early on and gained a moon from the resulting debris.
The Golden Gate Bridge was built simply, to connect San Francisco to Marin County. The San Francisco Bay has rough currents and ferries were the only way to get across. Building a bridge just made it easier.
The Golden Gate Bridge is more than a way to drive to and from Marin County, Calif., which sits just north of San Francisco and is home to charming sites such as Muir Woods and Sausalito. The bridgeâs early designs were ugly, utilitarian and nothing to celebrate.