1. Eclipses
Barbieri Chapter 15

2. The black disk is a lunar transit of the sun.
Transit movie
The sun as seen by the STEREO B spacecraft in four wavelengths of extreme ultraviolet light.
The black disk is a lunar transit of the sun.

3. STEREO Spacecraft Two spacecraft: A, B
One trailing and one leading at Earth orbit
3D images of the sun and coronal mass ejections (CME)
STEREO B lags behind Earth 1 million miles
4.4 times further from the moon than is Earth

4. Transit of moon across Sun as seen from STEREO
This STEREO-B eclipse movie is a composite of data from the spacecraft's coronagraph and extreme ultraviolet imager.

5. STEREO Orbit
Leaving Earth orbit
Heliocentric view

6. Click active
PDF here

7. Credits
A view of the aurora australis as taken by the Imager for Magnetopause-to-Aurora Global Exploration (IMAGE) spacecraft on Jan Credit: NASA.