Dark Energy: Proof Found in Distant Galaxies





Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Apr 4, 2012

After years of theorizing, astrophysicists say mysterious "dark energy" does in fact exist in large amounts ... and it's potent stuff.

After studying over 260,000 galaxies, scientists at the Baryon Oscillation Spectroscopic Survey—appropriately abbreviated as BOSS—now believe that 6 billion years ago gravity could no longer slow the expansion of the universe. At that temporal tipping point, dark energy took over and has been rapidly expanding the universe to this day.

The dark energy was discovered in part by studying massive primordial sound waves that crashed through the universe after the Big Bang. And the idea that dark energy covers a whopping 73 percent of the universe and is making it expand fits in with Einstein's theory of relativity.

By understanding more about dark energy, scientists hope to learn more about the universe's past, present, and future.

Still as mystified as us? Don't worry; the Wu-Tang Clan's GZA has lectured on the topic at Harvard and NYU. Maybe next he'll come to a city near you.


When autoplay is enabled, a suggested video will automatically play next.

Up next

to add this to Watch Later

Add to

Loading playlists...