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Transit of Mercury
4th Contact (Webcast)
Date: November 14, 1999
Running Time: 0:02:02

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On November 15th, 1999, the western Hemisphere was treated to an astronomical event unseen for 25 years. On that day, the tiny planet Mercury passed between us and the sun--an event known as a "transit." Here is one of five short streaming videos detailing the four important "contact" points and mid-transit. Note that the sound you hear is a timing track recorded from the WWV radio service. Depending on the computer you use, the clock may "tick" fast or slow. Apparently RealMedia does not respect the integrity of time!
On November 8, 2006, Mercury slowly slid across the face of the sun during an event known as a transit. The Exploratorium's expedition crew was at the Kitt Peak National Observatory, and, with the Kitt Peak staff, we webcast the transit: a live five-hour telescope feed with commentary at the top of each hour.

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00:24:36
Transit of Mercury Pre-Program (Webcast)
11/8/2006   
Join Exploratorium staff Paul Doherty and Robyn Higdon as they discuss the Transit of Mercury. ...
 
05:12:09
Transit of Mercury (Webcast)
11/8/2006   
On November 8, 2006, Mercury slowly slid across the face of the sun during a relatively rare e ...
 
0:01:01
1st Contact (Webcast)
11/14/1999   
On November 15th, 1999, for the first time in 25 years, the planet Mercury passed between us (in ...
 
0:02:02
2nd Contact (Webcast)
11/14/1999   
On November 15th, 1999, for the first time in 25 years, the planet Mercury passed between us (in ...
 
0:01:01
Mid-Contact (Webcast)
11/14/1999   
On November 15th, 1999, for the first time in 25 years, the planet Mercury passed between us (in ...