In 1916, Einstein finished his theory of general relativity, which describes how gravitational forces alter the curvature of spacetime. Among other things, this theory predicted that the universe is expanding, which was confirmed ...
Astronomy
Dec 8, 2022
0
70
How old is our universe, and what is its size? A team of researchers led by University of Hawaiʻi at Mānoa astronomers Brent Tully and Ehsan Kourkchi from the Institute for Astronomy have assembled the largest-ever compilation ...
Astronomy
Sep 26, 2022
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48
Spanning from 2003 to 2021, this collection of images from the NASA/ESA Hubble Space Telescope features galaxies that are all hosts to both Cepheid variables and supernovae. These two celestial phenomena are both crucial ...
Astronomy
May 20, 2022
6
150
The technique of Gaussian Processes (GP) is widely used to reconstruct cosmological parameters, most notably the expansion rate of the universe, using observational data. For many cosmologists, the crowning achievement of ...
Astronomy
Nov 15, 2021
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14
Scientists have known for decades that the universe is expanding, but research in the past few years has shaken up calculations on the speed of growth—raising tricky questions about theories of the cosmos.
General Physics
Sep 13, 2019
66
287
The history of science is filled with stories of enthusiastic researchers slowly winning over skeptical colleagues to their point of view. Astrophysicist Scott Hughes can relate to these tales.
Astronomy
Apr 2, 2019
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36
On the morning of Aug. 17, 2017, after traveling for more than a hundred million years, the aftershocks from a massive collision in a galaxy far, far away finally reached Earth.
Astronomy
Mar 29, 2019
6
123
Researchers from the University of Portsmouth have come up with a new measurement of one of the most debated topics in cosmology.
Astronomy
Nov 13, 2018
22
27
In 1920's Edwin Hubble, an American astronomer, showed that the recessional velocity of a galaxy increases with its distance from the earth, known as Hubble's law. Hubble's law is taken as the first observational basis for ...
General Physics
Nov 5, 2015
4
46
The Hubble Space Telescope survived decades of delays, glitches and blunders to fulfill predictions that it would rewrite science textbooks. But as it moves into the final years of its life, scientists say some of its best ...
Space Exploration
Apr 29, 2015
0
17
