Predicting the composition of dark matter
A new analysis by a team of physicists offers an innovative means to predict "cosmological signatures" for models of dark matter.
A new analysis by a team of physicists offers an innovative means to predict "cosmological signatures" for models of dark matter.
General Physics
Jul 6, 2022
1
1590
Scientists who study the cosmos have a favorite philosophy known as the "mediocrity principle," which, in essence, suggests that there's really nothing special about Earth, the sun or the Milky Way galaxy compared to the ...
Astronomy
Jun 3, 2022
7
2334
Climate change gives rise to more unstable weather, local droughts and extreme temperature records, but a coherent theory relating local and global climate is still under active development. Now a Danish astrophysics student ...
Earth Sciences
May 25, 2022
1
78
Completing a nearly 30-year marathon, NASA's Hubble Space Telescope has calibrated more than 40 "milepost markers" of space and time to help scientists precisely measure the expansion rate of the universe—a quest with a ...
Astronomy
May 19, 2022
9
1073
The solar system has eight planets. In 2006, astronomers reclassified Pluto as a dwarf planet, the same class that contains Eris, Sedna, Quaoar, Ceres and perhaps many more solar system small bodies. These are defined approximately ...
Astronomy
Mar 14, 2022
5
815
Scientists from the Kavli Institute for the Physics and Mathematics of the Universe and the University of Minnesota, Tomotake Matsumura and Shaul Hanany, and their collaborators have made a new type of optical element that ...
Optics & Photonics
Jan 27, 2022
0
341
By confirming certain light-scattering dynamics first proposed a half-century ago, University of Nebraska–Lincoln physicists are casting fresh eyes on the universe-birthing fireworks ignited by the Big Bang nearly 14 billion ...
General Physics
Dec 20, 2021
5
103
The universe was created by a giant bang; the Big Bang 13.8 billion years ago, and then it started to expand. The expansion is ongoing: it is still being stretched out in all directions like a balloon being inflated.
Astronomy
Mar 3, 2021
24
275
A multi-institutional group of researchers has developed new metamaterial tiles that will help improve the sensitivity of telescopes being built at the preeminent Simons Observatory in Chile. The tiles have been incorporated ...
Optics & Photonics
Jan 26, 2021
0
188
Ninety years after Edwin Hubble discovered the systematic motions of galaxies and George Lemaitre explained them as cosmic expansion from a point using Einstein's equations of relativity, observational cosmology today is ...
Astronomy
Jan 4, 2021
4
194