Here are four planets lined up in the dawn sky from Chile, May 7, 2011 from a latitude of 23° South. They are Venus (top, bright) and next to it Mercury, then Jupiter below and Mars at bottom closest to the horizon and faintest. Venus, Jupiter and Mars form an almost perfectly-spaced line of 3 worlds. The peak at left is the 5,900-metre-high Licancabur Volcano. The red lights are cars heading up over the pass to Bolivia in the pre-dawn, likely tours going to Laguna Verde.
The Amazing Sky 