Sunspot Detectives

Classroom Experiment where one can make a simple pinhole camera and observe the day's Sunspot Activity. This experiment was created by the Laboratory for Atmospheric Space Physics in the university of Colorado, Boulder.

The QuEST is a four-episode cartoon video series which introduces early astronomers, including Galileo and Secchi, along with their discoveries about the Sun.

Information about sunspots from NASA's Space place website.

Website of the Sunspot Index and Long-term Solar Observations SILSO, which is the current curator of the international sunspot number series.

Information about the solar cycle .

Website of the Sun-Climate group at Max Planck institute for solar system research with information about the solar influence on Earth's climate and the role sunspots play.

Information about Galileo Galilei and some of the earliest telescopic observations of the Sun by the Galileo project website.

Helioviewer website where one can access modern day satellite observations of the Sun and see high resolution photographs of sunspots (select instrument HMI and measurement continuum).

Solar Monitor provides real-time information about the solar activity. The most recent images of the Sun are shown on the front page, together with the description of the active regions of the day and flares associated to them.