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Running Time:
02:03:07
Celebrate the spring equinox at the Mayan ruins of Chichén Itzá, in the state of Yucatan, Mexico. The alignment of the sun on this day creates the appearance of a shadow, in the form of a serpent, that descends the main staircase of the great pyramid. The Live@Exploratorium crew is there to capture the snake on film and to speak with local archaeologists, archeoastronomers, and solar scientists about this amazing phenomenon.

Project: Ancient Observatories: Chichén Itzá | Browse All

Date: March 21, 2005
Format: Expedition
Category: History of Science
Subject(s): Astronomy/Space Science, General Science
Running Time:
0:59:00
Join the Live@ crew and NASA scientists as we delve into the ancient knowledge of the Chacoans, daily sky watchers who amassed a great knowledge about the movements of the sun. And learn why today's astronomers and solar physicists continue to watch the sun, using modern ground-based observatories and orbiting space telescopes.

Project: Ancient Observatories: Chaco Canyon | Browse All

Date: December 21, 2004
Format: Expedition
Category: History of Science
Subject(s): Physics, History
Running Time:
00:03:02
Join us in Chaco Canyon to think about what we can learn from watching shadows.

Project: Ancient Observatories: Chaco Canyon | Browse All

Date: October 7, 2004
Format: Expedition
Category: Everyday Science
Subject(s): Astronomy/Space Science, Geology/Earth Science
Running Time:
00:03:43
The sun holds an honored place in the lives of Southwestern Native Americans. Hear insights into the importance of the sun from Dr. Shelly Valdez, educator at Laguna Pueblo; Dr. Isabel Hawkins, solar researcher at UC Berkeley; and Andrew Garcia Sr., coordinator of Tewa dancers.

Project: Ancient Observatories: Chaco Canyon | Browse All

Date: October 7, 2004
Format: Expedition
Category: Everyday Science
Subject(s): Astronomy/Space Science, Geology/Earth Science, History
Running Time:
00:00:24
Time-lapse footage of light moving across a pictograph at Wijiji 931.

Project: Ancient Observatories: Chaco Canyon | Browse All

Date: October 7, 2004
Format: Expedition
Category: Everyday Science
Subject(s): Astronomy/Space Science, Geology/Earth Science
Running Time:
00:00:27
Watch as the square of light moves across the wall and niches at Rinconada.

Project: Ancient Observatories: Chaco Canyon | Browse All

Date: October 7, 2004
Format: Expedition
Category: Everyday Science
Subject(s): Astronomy/Space Science, Geology/Earth Science
Running Time:
00:00:48
See the movement of shadow on the North/South wall.

Project: Ancient Observatories: Chaco Canyon | Browse All

Date: October 7, 2004
Format: Expedition
Category: Everyday Science
Subject(s): Astronomy/Space Science, Geology/Earth Science
Running Time:
00:59:15
Astronomers in many parts of the world watched as Venus moved across the disk of the Sun, one of the rarest planetary alignments. The Exploratorium webcast this historic event from Greece.

Project: The Rarest Eclipse: Transit of Venus | Browse All

Date: June 8, 2004
Format: Expedition
Category: Science in Action
Subject(s): Astronomy/Space Science
Running Time:
00:44:08
Astronomers in many parts of the world watched as Venus moved across the disk of the Sun, one of the rarest planetary alignments. The Exploratorium webcast this historic event from Greece.

Project: The Rarest Eclipse: Transit of Venus | Browse All

Date: June 8, 2004
Format: Expedition
Category: Science in Action
Subject(s): Astronomy/Space Science
Running Time:
01:01:59
We mirrored NASA TV. Peek into the control room as the Opportunity rover lands on the Red Planet.

Project: Return to Mars | Browse All

Date: January 24, 2004
Format: Expedition
Category: Science in Action
Subject(s): Astronomy/Space Science