What do you mean by dark matter?
What does this "dark" term mean?
How do we know it is there?
Some experimental proof of the existence of dark matter
What is dark matter made of?
Different ideas about its make-up
How much dark matter is there in the Universe?
Theoretical forecasts and experimental measures
........And what is dark energy?
Recent research : the mysterious "quintessence"
Dark matter at Bologna University
Who is researching into it?
Questions & Answers
Physicists and Astronomers answer questions on dark matter