Cosmology
- Cosmology
Speed of early universe’s expansion determined
The rate known as the Hubble constant is measured with great precision for the universe of 11 billion years ago.
- Cosmology
Maybe time’s arrow needs ergodicity as well as entropy
Explaining the arrow of time might require an equilibrium universe with hidden ergodic dynamics.
- Astronomy
This winter warrior made the gravitational waves discovery possible
Engineer Steffen Richter played an important role in the recent gravitational waves discovery, wintering at the Amundsen-Scott research station at the South Pole and making daily treks to keep the BICEP2 telescope running.
- Cosmology
Cosmic question mark
Two ways of measuring the universe’s expansion rate disagree by about 10 percent. One of the methods may be flawed. Or it could be that a hitherto unobserved phenomenon is at work.
- Cosmology
Top 10 cosmological discoveries
The cosmic microwave background radiation has played a part in many of cosmology’s greatest discoveries.
- Cosmology
Gravitational waves unmask universe just after Big Bang
For the first time, researchers have seen traces of superfast cosmic expansion and gravity waves.
- Cosmology
Inflation rides gravity waves into cosmological history
The discovery of gravity waves in the cosmic microwave radiation signals the success of inflationary cosmology.
- Cosmology
First images of gravity waves, evidence of cosmic inflation reported
The first images of gravitational waves and the first direct evidence for cosmic inflation were announced March 17.
- Cosmology
Gravitational wave detection a big day for the Big Bang
On a snowy St. Patrick’s Day, our offices officially shut down by a late-winter storm, the Science News staff was abuzz over the biggest thing since the Higgs boson. On March 17, scientists announced the first direct evidence of the theory of cosmic inflation: primordial gravitational waves.
- Quantum Physics
Einstein was wrong about spooky quantum entanglement
Einstein’s biggest blunder wasn’t about vacuum energy in space, but in confusing people about quantum entanglement.
- Astronomy
Oldest star provides hints about first supernovas
The chemical composition of star SMSS J031300.362670839.3 and four others suggests that the explosions of the early universe weren't big enough to seed galaxies with iron.
- Cosmology
Slow, cold start to universe suggested
By allowing particle masses to change, a new theory suggests how the universe could have arisen without a Big Bang.
