Jupiter and Saturn crossed paths Monday night. How one Chronicle photographer got the once-in-a-lifetime shots FacebookTwitterEmail 1of8 Visitors watch Jupiter and Saturn over the Golden Gate Bridge from Sausalito, Calif., on Sunday, December 20, 2020. The two planets are approaching their "great conjunction" which will be the planets' closest encounter in almost 400 years on Monday December 21st. The visual observed distance in the sky between two planets will be a mere tenth of a degree, or 6 arcminutes, apart.Carlos Avila Gonzalez / The ChronicleShow MoreShow Less 2of8 Jupiter and Saturn are seen with Coit Tower in the foreground in San Francisco, Calif., on Monday, December 21, 2020. The two planets reached their "great conjunction" which is the planets' closest encounter in almost 400 years on Monday. The visual observed distance in the sky between two planets was a mere tenth of a degree, or 6 arcminutes, apart.Carlos Avila Gonzalez / The ChronicleShow MoreShow Less