Exploratorium Observatory

The Exploratorium's Guide to Astronomy Resources.

Build a Solar System-
Find out what space is really like with this scale model.

Your Weight on Other Worlds- A cool exhibit for the weight conscious.

Your Age on Other Worlds- A cool exhibit for the chronologically challenged.

Project Serendip -
Search For Life in the Cosmos with SETI.

Space Weather Research Explorer
Use live data to check the weather in space, and learn how it can affect us here on earth.
On October 15, 1997, the Cassini-Huygens spacecraft, loaded with an array of powerful instruments, rocketed into space on a seven-year journey to Saturn and its vicinity...
Venus Venus
On June 8, 2004, astronomers in many parts of the world watched as Venus moved across the disk of the Sun, one of the rarest planetary alignments.
Spirit and Opportunity, the Mars Exploration Rovers, landed on Mars in 2004 and have been exploring the red planet ever since. See all the photos the rovers have taken, watch more than 30 webcasts, and more.
Solar Max
Solar Max: Your Guide to the Year of the Active Sun
The eleven year solar cycle reached its maximum in 2000. See images of the sun, follow solar max news, and keep up with NASA missions.
Solar Eclipse
Solar Eclipse: Stories From the Path of Totality
View archives of Exploratorium live solar eclipse webcasts, find out why eclipses happen and how to view one, peek into journals from early eclipse expeditions, and look at eclipses through myths, legends, and literature.
Transit of Mercury
Transit title
See the tiny disk of Mercury slowly travel across the face of the sun in this rare event.
Sunspots - Magnetic Fields and Turbulent Eruptions
Dark spots, some as large as 50,000 miles in diameter, move across the surface of the sun, contracting and expanding as they go.
Auroras - Paintings in the Sky
Far north in the night sky, a faint glow appears on the horizon. Green and red flames of light stretch across the sky.
NASA logo

The Exploratorium is participating in NASA's Sun-Earth Education Forum.

Looking for other astronomy resources?
Visit the Astronomy section in the Exploratorium's Ten Cool Sites
Sun Earth Education Forum © Exploratorium