Speeding universe

  • The Hubble Space Telescope’s latest finding shows that the universe may be expanding at a faster rate than it was believed.
  • This discrepancy may portend new physics, scientists believe and various models are being floated to explain this.
  • One possibility that can explain this could be that dark energy may be shoving the universe apart with a greater strength than earlier.
  • Another idea is that dark radiation including particles travelling at speeds close to light, as yet undiscovered, such as ‘sterile neutrino’ could be driving this force.
  • Yet another idea is that dark matter interacts more strongly with normal matter than was believed to be.


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