Without information from various helpful sources, our project would never have been successfully done. We would like to thank The Inter-SOL Programme for giving advice on sunspot observations, as well as acknowledge the following sources for their information and other various materials.

We will also like to express our sincere gratitude to the Astronomy Club of Ngee Ann Polytechnic for their help in doing the sunspot observations.

<< Book references >>

Discoveries and Opinions of Galileo (1st Publication) :: Page 80 - 145
(Translated with an Introduction and Notes by Stillman Drake)
An Anchor Book, Published by Doubleday

Illustrated Encyclopedia of Astronomy

Empire of the Sun: Planets & Moons of the Solar System
By John Gribbins & Simon Goodwin
Published by Constable and Co. Ltd

Universe (5th Edition)
By William J.Karfmarn III, Roger A.Freedom
Published by W.H. Freeman & COD

The New Solar System (Fifth Edition)
By J.Kelly Beatty, Carolyn Collins Peterson, Andrew Chaikin
Published by Cambridge University press

Guide to the Sun
By Kenneth J.H.Philips
Published by Cambridge University Press

Note: the details are on each respective page

<< Websites >>

The Solar and Heliospheric Observatory
(Especially Terry who granted us permission to use the pics and info on the website.)

Laboratory for Astronomy and Solar Physics: Solar Flare Theory (by NASA/Goddard Space Flight Center)

NASA/Marshall Solar Physics
(Thanks to Dr. David H. Hathaway for granting us permission to use his info and pics.)


Astronomy 161: The Solar System

Oulu Space Physics Textbook

The Galileo Project


Sunspots & Activist Strategy

And all those who have helped us but whose name we do not know.

Page of GEM1506K, Group 2 (http://sg.geocities.com/apollonus02)