Cosmology
At Evolution News: To Avoid a Cosmic Beginning, Physicist Paul Steinhardt Goes to Extraordinary Lengths
George Ellis argues: We can’t know if the universe had a beginning
At Phys.org: Can cosmic inflation be ruled out?
At SciTech Daily: Supernova Explosions Reveal Precise Details of Dark Energy and Dark Matter
At Mind Matters News: Why it’s difficult for science to answer some basic questions
From IAI News: How infinity threatens cosmology
At SciTech Daily: Surprising New Features of Mysterious Fast Radio Bursts Defy Current Understanding
At Reasons.org: Did the initial findings of the JWST repudiate the big bang creation model?
At Evolution News: How Do We Know the Age of the Universe?
Physicist Rob Sheldon writes: A correspondent asked me recently how we know the age of the universe. The answer is calculated from the inverse of the Hubble constant. That is, if the galaxies are moving away from us at 72 km/s /Mpc, that has units of 1/time, the inverse is the age of the universe (more or less) because it locates the time since everything was at a point. For the universe to be younger, the Hubble constant has to be bigger. In fact, when Hubble first proposed his constant, it gave an age of the universe of about 4 billion years, which is the age of the oldest rocks in the Earth. However every decade saw a decrease in the Hubble Read More ›