What is the latest on the nature and existence of 'dark matter'?

Answer 1

Take a look at the site of the Macho experiment.

http://wwwmacho.mcmaster.ca/

MACHO stands for: MAssive Compact Halo Objects

Answer 2

What is dark matter? This mysterious, apparently invisible stuff that researchers think is everywhere is not easily understood. A first step, however, is grasping what can be seen, and why......
but u can read more in the followinf sites:)


http://www.space.com/scienceastronomy/astronomy/dark_matter_sidebar_010105.html

http://www.space.com/news/cosmic_shear_000512.html

http://www.space.com/scienceastronomy/astronomy/dark_matter_001004.html

http://www.space.com/scienceastronomy/generalscience/dark_matter_000405_wg.html