What is behind dark energy—and what connects it to the cosmological constant introduced by Albert Einstein? Two physicists from the University of Luxembourg point the way to answering these open questions of physics.
General Physics
Jan 24, 2023
32
1850
Astrophysicists have performed a powerful new analysis that places the most precise limits yet on the composition and evolution of the universe. With this analysis, dubbed Pantheon+, cosmologists find themselves at a crossroads.
Astronomy
Oct 19, 2022
64
979
A black hole is usually where information goes to disappear—but scientists may have found a trick to use its last moments to tell us about the history of the universe.
Astronomy
Aug 16, 2022
2
932
Our universe is expanding, but our two main ways to measure how fast this expansion is happening have resulted in different answers. For the past decade, astrophysicists have been gradually dividing into two camps: one that ...
Astronomy
Jun 30, 2021
70
4230
A combination of astrophysical measurements has allowed researchers to put new constraints on the radius of a typical neutron star and provide a novel calculation of the Hubble constant that indicates the rate at which the ...
Astronomy
Dec 17, 2020
10
2271
Wielding state-of-the-art technologies and techniques, a team of Clemson University astrophysicists has added a novel approach to quantifying one of the most fundamental laws of the universe.
Astronomy
Nov 8, 2019
25
1555
The universe is looking younger every day, it seems.
Astronomy
Sep 12, 2019
195
2987
Astronomers have made a new measurement of how fast the universe is expanding, using an entirely different kind of star than previous endeavors. The revised measurement, which comes from NASA's Hubble Space Telescope, falls ...
Astronomy
Jul 16, 2019
786
1985
Astronomers using National Science Foundation (NSF) radio telescopes have demonstrated how a combination of gravitational-wave and radio observations, along with theoretical modeling, can turn the mergers of pairs of neutron ...
Astronomy
Jul 8, 2019
190
1275
Astronomers using NASA's Hubble Space Telescope say they have crossed an important threshold in revealing a discrepancy between the two key techniques for measuring the universe's expansion rate. The recent study strengthens ...
Astronomy
Apr 25, 2019
109
6668
