Dark Energy Dark Matter and Anti-Gravity

<p><em><strong>The universe is full of matter and the attractive force of gravity pulls all matter together.<br><br>The expansion of the universe has not been slowing due to gravity as everyone thought it has been accelerating.</strong></em><br><br>Maybe it was a result of a long-discarded version of Einstein's theory of gravity one that contained what was called a cosmological constant. Maybe there was some strange kind of energy-fluid that filled space. Maybe there is something wrong with Einstein's theory of gravity and a new theory could include some kind of field that creates this cosmic acceleration.<br><br>It turns out that roughly 68percent of the universe is dark energy. Dark matter makes up about 27percent. The rest - everything on Earth everything ever observed with all of our instruments all normal matter - adds up to less than 5percent of the universe. Come to think of it maybe it shouldn't be called normal matter at all since it is such a small fraction of the universe.<br><br>Balungi Francis explains this major conundrum in modern science and looks at how scientists are beginning to find solutions to it. </p>