What is Dark Energy ?

by Clara Moskowitz

27th april 2010

Dark energy is the name given to an unexplained force that is drawing galaxies away from each other, against the pull of gravity, at an accelerated pace.


Dark energy is a bit like anti-gravity. Where gravity pulls things together at the more local level, dark energy tugs them apart on the grander scale.


Dark Matter and Dark Energy.png

Dark Matter and Dark Energy Simplified Structure


Its existence isn't proven, but dark energy is many scientists' best guess to explain the confusing observation that the universe's expansion is speeding up.


Experts still don't know what's driving this force, but the quest to learn more about dark energy is one of cosmologists' top priorities.

Copyright - credits for article : http://www.space.com/scienceastronomy/090427-mm-dark-ener...

Copyright - credits photo : commons.wikimedia.org


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