Welcome to the STEREO website!

STEREO consists of two space-based observatories - one ahead of Earth in its orbit, the other trailing behind. With this new pair of viewpoints, scientists will be able to see the structure and evolution of solar storms as they blast from the Sun and move out through space.

This movie shows a spherical map of the Sun as it currently appears, formed from a combination of the latest STEREO Ahead and Behind beacon images, along with an SDO/AIA image in between. The movie starts with the view of the Sun as seen from Earth, with the 0 degree meridian line in the middle. The map then rotates through 360 degrees to show the part of the Sun not visible from Earth.

Latest EUVI Images

Featured Gallery Item

Busy Days for Old Sol

STEREO SELECTS A selection of some of our favorite video clips and images as they occur. View Selects gallery STEREO Galleries Index SOHO Pick of the week

What's New

Visit STEREO on the NASA Portal.