The universe is expanding faster than we thought, and no one knows why
Explaining a discrepancy between what was happening 13 billion years ago and now may require new physics.
Eric Mack
Explaining a discrepancy between what was happening 13 billion years ago and now may require new physics.
Eric Mack
Quote:One possible explanation could be the appearance of dark energy at some point long ago. It's now theorized that up to 70 percent of the universe may be made up of the mysterious stuff. A yet undiscovered and speedy particle in the universe that affects its expansion is another possibility, as is the idea that unseen dark matter might be pushing on the normal matter we can see more strongly than we thought.
The actual explanation remains a mystery. Riess and other scientists plan to continue fine-tuning their tools and measurements, but if the mismatch isn't due to human error, new physics may be needed to complete the puzzle.
"Previously, theorists would say to me, 'it can't be. It's going to break everything.' Now they are saying, 'we actually could do this,'" Riess said.
'Historically, we may regard materialism as a system of dogma set up to combat orthodox dogma...Accordingly we find that, as ancient orthodoxies disintegrate, materialism more and more gives way to scepticism.'
- Bertrand Russell
- Bertrand Russell
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