Witness the Transit of Venus!
'Ancient Mysteries-Future Discoveries' opens the door to a much deeper understanding of our Sun and its impact across the ages.
Magnetic Storms! Explore the effects of the Sun's magnetic fields on Earth.
Join us for Sun-Earth Day and the International Year of Astronomy as we explore, experience, study and predict our sun.
For Sun-Earth Day 2008, we will engage a world-wide audience in the celebration of the International Heliophysical Year (IHY).
We kick off the International Heliospheric Year celebration with Living in the Atmosphere of the Sun!
Join us in an extraordinary journey of exploration, discovery and understanding of the total solar eclipse of March 29, 2006!
The Ancient Observatory theme for 2005 features solar alignments with structures that mark the equinoxes and/or solstices.
Learn more about the transit of Venus that occurred on June 8, 2004. In this site you will find comparisons of Venus with Earth and Mars, calculations of the distances to nearby stars, and the use of transits to identify extra-solar planets.
The core of the sun is nearly as dense as lead, and has a temperature of 15 million °C.