November 30, 2012

Universe Expansion: Fast, Slow, & Fast Again

Andrew Grant, ScienceNews

AP Photo

New measurements have captured the universe’s expansion when it was slowing down 11 billion years ago, before a mysterious entity called dark energy took over and began spurring the cosmos to expand faster and faster. The measurements, reported online November 12 at, are an important step toward understanding what dark energy is and how it works.

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TAGGED: Dark Energy, Universe Expansion