By observing different parts of the electromagnetic spectrum, the Hubble Space Telescope and James Webb Space Telescope are able to see different things in the same parts of the universe.…
Category: Cosmology
What is dark energy? Inside our accelerating, expanding universe
The history of the universe is outlined in this infographic. Credit: NASA Some 13.8 billion years ago, the universe began with a rapid expansion we call the Big Bang. After…
Researchers study a million galaxies to find out how the universe began
by Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo Figure 1: An image obtained from observations of large-scale structure of the universe. The numerous…
Physicists answer question of Supergalactic Plane’s absent spiral galaxies
Artist concept of the Milky Way. Credit: NASA/JPL-Caltech. Astrophysicists say they have found an answer to why spiral galaxies like our own Milky Way are largely missing from a part…
The universe is expanding faster than theory predicts—physicists are trying to explain the mismatch
The James Webb Space Telescope’s deep field image shows a universe full of sparkling galaxies. Credit: NASA/STScI Astronomers have known for decades that the universe is expanding. When they use…
Black holes could come in ‘perfect pairs’ in an ever expanding universe
Two black holes can be held at a fixed distance when their gravitational attraction (red arrows) is offset by the cosmic expansion (blue arrows) associated with a cosmological constant. Such…
It’s going to take more than early dark energy to resolve the Hubble tension
Hubble tension has gotten worse lately. Credit: Perivolaropoulos and Skara Our best understanding of the universe is rooted in a cosmological model known as LCDM. The CDM stands for cold…
