the big bang

The universe’s rate of expansion is in dispute – and we may need new physics to solve it

The universe’s rate of expansion is in dispute – and we may need new physics to solve it

Next time you eat a blueberry (or chocolate chip) muffin consider what happened to the blueberries in the batter as it was baked. The blueberries started off all squished together, but as the muffin expanded they started to move away from each other. If you could sit on one blueberry you would see all the others moving away from you, but the same would be true for any blueberry you chose. In this sense galaxies are a lot like blueberries.

Improved Hubble Yardstick Gives Fresh Evidence for New Physics in the Universe

Improved Hubble Yardstick Gives Fresh Evidence for New Physics in the Universe

Astronomers have used NASA's Hubble Space Telescope to make the most precise measurements of the expansion rate of the universe since it was first calculated nearly a century ago. Intriguingly, the results are forcing astronomers to consider that they may be seeing evidence of something unexpected at work in the universe.