Transit of Venus will be visible from Mexico, 5 June 2012
Next week, clear skies permitting, a Transit of Venus will be visible from all of Mexico (as well as the USA, most of Canada, etc). During a transit of Venus, the planet Venus passes slowly in front of the sun from the perspective of a viewer on Earth.
CAUTION: Never observe the sun directly, even during a transit of Venus, or your eyesight may be permanently damaged. Transit viewers should take similar precautions to those needed to observe an eclipse.
Map and additional information about the June 5/6 transit
Transit of Venus, Sun-Earth Day 2012 [NASA]
Such events are rare. This will likely be the last chance to see one in your lifetime since the next transit of Venus will be in more than 100 years time!