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The Rarest Eclipse: Transit of Venus
A Short History of the Keeling Curve (Video)
Date: June 1, 2012
Running Time: 00:03:16
Dr. John Barnes, Station Manager of NOAA's Mauna Loa Observatory, shares the history of Charles Keeling's pioneering carbon dioxide measurements, which have been taken continually at Mauna Loa since 1958.
Transits of Venus—the movement of Venus across the face of the sun—occur in pairs that are eight years apart and then don’t happen again for more than a hundred years. Before the transit in 2004, the last two Venus transits were in 1874 and 1882. After the transit in 2012, there ... More »

Featured

16:54:00
Transit of Venus: Sonification (Video)
6/12/2012   
Exploratorium composer Wayne Grim used the video of the transit to create a sound c ...
 
00:02:00
Transit of Venus 2012: 1st and 2nd Contact (Video)
6/5/2012   
Watch the beginning of Venus’s transit across the disk of the sun, one of the rarest astr ...
 
00:02:00
Transit of Venus 2012: 3rd and 4th Contact (Video)
6/5/2012   
Watch the conclusion of Venus’s 6.5-hour journey across the disk of the sun, one of the ra ...
 
00:04:20
Mauna Loa Observatory (Video)
6/1/2012   
Learn about NOAA’s Mauna Loa Observatory on the Big Island of Hawaii, the location of ...
 
00:34:10
The Strange Atmosphere of the Planet Venus (Webcast)
6/8/2004   
A series of sometimes fiery demonstrations shows what the pressure and composition of Venus’ ...

Archive

16:54:00
Transit of Venus: Sonification (Video)
6/12/2012   
Exploratorium composer Wayne Grim used the video of the transit to create a sound c ...
 
00:02:00
Transit of Venus 2012: 1st and 2nd Contact (Video)
6/5/2012   
Watch the beginning of Venus’s transit across the disk of the sun, one of the rarest astr ...
 
00:02:00
Transit of Venus 2012: 3rd and 4th Contact (Video)
6/5/2012   
Watch the conclusion of Venus’s 6.5-hour journey across the disk of the sun, one of the ra ...
 
00:03:15
Monitoring Climate Change (Video)
6/4/2012   
Join Dr. Russell Schnell, the director of the Global Monitoring Division of the Nationa ...
 
00:04:20
Mauna Loa Observatory (Video)
6/1/2012   
Learn about NOAA’s Mauna Loa Observatory on the Big Island of Hawaii, the location of ...