Live@Exploratorium and NASA's Sun-Earth Connection traveled into the path of totality to capture that momentous event. Watch the ARCHIVED Eclipse Webcast and Telescope-only video!
On March 20, 2005, thousands of people gathered at a site called Chichen Itza to witness the appearance of a shadow, in the form of a serpent, that descended the main staircase of the main pyramid.
On June 8, 2004, astronomers in many parts of the world watched as Venus moved across the disk of the Sun, one of the rarest planetary alignments. Only six Venus transits have occurred since the invention of the telescope in the 1600s
The most powerful solar flare in the last 500 years occurred on September 2, 1859 and was sighted by two astronomers who happened to be looking at the sun at exactly the right time!