The hypothetical Planet Nine, assumed to be lurking somewhere in the outskirts of our solar system, may not be a planet at all. A new study, published September 24 on the arXiv pre-print server, suggests that the mysterious ...
Dark matter, by its very nature, is unseen. We cannot observe it with telescopes, and nor have particle physicists had any luck detecting it via experiments.
Astronomy
Sep 11, 2019
20
281
The cosmological constant, introduced a century ago by Albert Einstein in his theory of general relativity, is a thorn in the side of physicists. The difference between the theoretical prediction of this parameter and its ...
General Physics
Aug 29, 2019
152
1748
Neutrinos come in three flavours made up of a mix of three neutrino masses. While the differences between the masses are known, little information was available about the mass of the lightest species until now.
General Physics
Aug 22, 2019
13
1480
,On a hot morning in early July, a seven-foot wide, 8,000-pound metallic structure made its way from Boston to Penn's David Rittenhouse Laboratory. The large aperture telescope receiver (LATR) was carefully loaded onto a ...
Astronomy
Aug 8, 2019
0
42
Astronomers, astrophysicists and particle physicists gathered recently at the Kavli Institute for Theoretical Physics at the University of California to discuss the seriousness of differing measurements of the Hubble Constant. ...
The universe, perhaps surprisingly, is not comprised of galaxies randomly distributed throughout space; that is, it is not very homogeneous. Instead, its galaxies are clustered into distinct structures, typically gigantic ...
Astronomy
Jul 29, 2019
2
220
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
The Tibet ASgamma experiment, a China-Japan joint research project, has discovered the highest energy cosmic gamma rays ever observed from an astrophysical source—in this case, the Crab Nebula. The experiment detected gamma ...
Astronomy
Jul 3, 2019
3
1
As cosmologists ponder the universe—and other possible universes—the data available to them is so complex and vast that it can be extremely challenging for humans alone to comprehend.
General Physics
Jun 25, 2019
13
8
