Found 20 - 30 results of 71 programs matching keyword " solar radiation"
On November 8, 2006, Mercury slowly slid across the face of the sun during a relatively rare event known as a transit. The Exploratorium's Live@ crew was at the Kitt Peak National Observatory in Arizona to cover the event. This webcast includes a brief history of Kitt Peak and its 21 telescopes. Watch ancient text revealed and read for the first time in a thousand years! Archimedes was one of the world's greatest scientific and mathematical minds. His thoughts were inscribed on goatskin parchment, but the letters and diagrams were scraped off and written over by Greek monks in the Middle Ages. Now, using an intense x-ray beam generated at Stanford University's linear accelerator, some of the original Greek text will be revealed for the first time in the modern world. On March 29, 2006, a total solar eclipse occurred as the moon moved directly between the earth and the sun. The moon's shadow fell on the earth, first darkening the eastern tip of Brazil, and then moved across the Atlantic Ocean to make landfall in Ghana, Africa. It continued moving northeast through Nigeria, Niger, Libya, Egypt, across the Mediterranean and into Turkey, where an Exploratorium team was waiting. On December 11, 2005, Opportunity, one of the twin rovers exploring Mars, celebrated its first Martian birthday. Opportunity had been on the red planet 687 Earth days, which is one Martian year. (A year is the time it takes a planet to make a complete loop around the sun). Join us for a look back over the those 687 days of discovery: what we learned, what we saw, and what questions remained unanswered. On the occasion of Hubble's 15th birthday we unveil two spectacular mosaic images from the telescope, discuss the amazing accomplishments of Hubble during the past 15 years, and look at some of the images from space. NASA's Mars Exploration Rovers, Spirit and Opportunity, have long outlived their life expectancy of three months. Join us as we sum up the rover data and explain how this information changes our view of Mars. 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. Time-lapse footage of light moving across a pictograph at Wijiji 931. 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. 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.