The universe is expanding faster than estimated, finds new study

The controversy over the universe's expansion rate continues with a new, faster estimate.

Credit: Carnegie-Irvine Galaxy Survey
  • A new estimate of the expansion rate of the universe puts it at 73.3 km/sec/Mpc.
  • This is faster than the previous estimate of expansion in the early universe.
  • The discrepancy may mean fundamental theories need rethinking.
Keep reading Show less

A technique to sift out the universe’s first gravitational waves

Identifying primordial ripples would be key to understanding the conditions of the early universe.

Photo by Denis Degioanni on Unsplash

In the moments immediately following the Big Bang, the very first gravitational waves rang out.

Keep reading Show less

Are we living in a baby universe that looks like a black hole to outsiders?

Baby universes led to black holes and dark matter, proposes a new study.

Credit: Kavli IPMU
  • Researchers recently used a huge telescope in Hawaii to study primordial black holes.
  • These black holes might have formed in the early days from baby universes and may be responsible for dark matter.
  • The study also raises the possibility that our own universe may look like a black hole to outside observers.
Keep reading Show less

How ‘heat death’ will destroy the universe

The expansion of the universe is speeding up—contrary to what many physicists expected. A "heat death" is coming, but it's not what you think.

  • The expansion of the universe is accelerating as the force of dark energy wins out over the pull of all the universe's collective gravity.
  • As every object in space moves farther and farther away from all other objects in space, the universe will reach a state of maximum entropy, and 'heat death' will ensue. As astrophysicist Dr. Katie Mack points out, heat death is not actually a hot phenomenon—it's also known as the "Big Freeze."
  • Around 100 billion years from now, the universe will have expanded so much that distant galaxies won't be visible from Earth, even with high-powered telescopes. Stars will disappear in a trillion years and new stars will no longer form. The "good" news is that humans probably won't be around to witness the machine as it breaks down and dies.
Keep reading Show less

The universe keeps dying and being reborn, claims Nobel Prize winner

Sir Roger Penrose claims our universe has been through multiple Big Bangs, with more coming.

Credit: Adobe Stock
  • Roger Penrose, the 2020 Nobel Prize winner in physics, claims the universe goes through cycles of death and rebirth.
  • According to the scientist, there have been multiple Big Bangs, with more on the way.
  • Penrose claims that black holes hold clues to the existence of previous universes.
Keep reading Show less
Quantcast