Dark energy may not be what it seems, scientists say [Video]

Distant, ancient galaxies are giving scientists more hints that a mysterious force called dark energy may not be what they thought.See an excerpt of an interview in the video aboveAstronomers know that the universe is being pushed apart at an accelerating rate and they have puzzled for decades over what could possibly be speeding everything up. They theorize that a powerful, constant force is at play, one that fits nicely with the main mathematical model that describes how the universe behaves. But they can’t see it and they don’t know where it comes from, so they call it dark energy.It is so vast it is thought to make up nearly 70% of the universe — while ordinary matter, like all the stars and planets and people, makes up just 5%.However, findings published earlier this year by an international research collaboration of more than 900 scientists from around the globe yielded …