# Jerusalem Mathematics Colloquium

Thursday, 1st January 2004, 4:00 pm

Mathematics Building, Lecture Hall 2

##

Professor Avishai Dekel

(Institute of Physics, Hebrew University)

"DARK MATTER, DARK ENERGY, AND THE FATE OF THE UNIVERSE"

** Abstract: ** The last few years led to a revolution in our physical
understanding of the Universe we live in. This revolution is driven by exciting
new observations from space and from big telescopes on earth in many different
wavelengths. We now have answers to some of the major questions of cosmology,
and with these answers come new puzzles.

Will the expanding Universe eventually
stop and recollapse or will it expand forever? In what rate? Is the
Universe finite or infinite in extent? Is it curved or Euclidean?
What is the composition of the matter and energy in the Universe?
How much of it is luminous and how much is dark? What is the nature of
the dark matter and the mysterious dark energy?

On our way to unfolding
the properties of the universe, we meet challenges to the common wisdom,
such as the question of whether the gravitational force is indeed always
attractive.

Light refreshments will be served in the faculty lounge at 3:30.

List of talks, 2003-04

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