Two sets of cosmic discoveries have garnered the 2019 Nobel Prize in physics. Half of the prize of 9 million Swedish kronor (about $900,000) goes to James Peebles of Princeton…
Category: Cosmology
A new book explores how the concept of the multiverse has evolved
The Number of the HeavensTom SiegfriedHarvard Univ., $29.95 There is no bigger question than whether the universe is all there is. Scientists are juggling several ideas for what a multiverse,…
Debate over the universe’s expansion rate may unravel physics. Is it a crisis?
SANTA BARBARA, Calif. — The word “crisis” hung in the air from the very beginning of the meeting. In a room just steps from the ocean in Santa Barbara, astronomers…
Superhorizon modes can explain Hubble tension
The sketch depicts a perturbation of very large wavelength, larger than the size of the maximum distance light could have travelled since the origin of the Universe. The volume inside…
Hubble sees cosmic clues in a galactic duo
Credit: ESA/Hubble & NASA, D. Jones, A. Riess et al.; Acknowledgment: R. Colombari This spectacular image from the NASA/ESA Hubble Space Telescope captures the spiral galaxy NGC 105, which lies…
Researchers account for some of the lithium missing from our universe
Experimental setup. As a beam of beryllium comes in from the left, the deuteron Trojan horse intercepts it at the target and delivers its neutron soldier. This allows the decay…
New study sows doubt about the composition of 70 percent of our universe
In 1572, the Danish physicist Tycho Brahe discovered this supernova called Stella Nova. By measuring the distance from this supernova and other novas, researchers later on concluded, that the universe…
Researchers confirm accuracy of cosmological data analysis technique using mock data
The volume of the challenge data prepared by the Japanese team (center), compared to the total volume of the real universe observable by light (left), and the volume of one…
An early dark energy model could solve an expanding cosmological conundrum
A diagram of the expansion of the Universe. This accelerating expansion of the Universe could be explained by an early dark energy model. (NASA/ WMAP Team). Credit: NASA Much mystery…
Researchers apply the anti-de Sitter/conformal field theory to cosmology
Penrose diagram of the charged black hole with the end-of-the-world brane. The brane expands out of and falls back in the black hole horizon, cutting out part of the left…
