Yahoo wants to help youmake a long distance callacross the galaxy.

Mexico's Teotihuacan, once the center of a sprawling pre-Hispanic empire, is set to become the launch pad for an attempt to communicate with extraterrestrial life.

"Starting on Tuesday [Oct. 10], enthusiasts from around the world will have a chance to submit text, images, video and sounds that reflect human nature to be included in the message.

"Those contributions -- part of Yahoo's "Time Capsule" project -- will be digitalized and beamed by a laser into space on October 25 from the Pyramid of the Sun at Teotihuacan, now an archaeological site near Mexico City.

"Archaeologists say a culture centered in Teotihuacan, known as the City of the Gods, dominated Mesoamerica for hundreds of years during the first millennium. It is unclear what led to the society's collapse."

Or perhaps not, considering info like this:

"New analysis of sediment samples from the southern Caribbean indicate that severe droughts occurred at the same time as the known collapse of the Mayan civilization. In a study in the March 14 issue of the journal Science, lead author Gerald Haug of Geoforschungszentrum in Potsdam, Germany, together with Konrad Hughen of the Woods Hole Oceanographic Institution and colleagues report that sediments from the Cariaco Basin in northern Venezuela clearly show a dry spell that the Caribbean region starting in the seventh century and lasting for more than 200 years."