Model describes universe with no big bang, no beginning, and no end
Universe may be on the brink of collapse (on the cosmological timescale)
Study finds possible alternative explanation for dark energy
(Phys.org)—Dark energy is an unknown form of energy that is proposed to drive the accelerated expansion of the universe. A new study by University of Georgia professor Edward Kipreos suggests that changes ...
Astronomers seek widest view ever of the universe with new telescope
At the annual meeting of the American Astronomical Society last week, the booth devoted to a revolutionary new telescope called the LSST got a lot of traffic.
Antimatter gravity could explain Universe's expansion
A second look at supernovae light: Universe's expansion may be understood without dark energy
Repulsive gravity as an alternative to dark energy (Part 1: In voids)
Repulsive gravity as an alternative to dark energy (Part 2: In the quantum vacuum)
Atoms at negative absolute temperature: The hottest systems in the world
(Phys.org)—In cold regions on earth, negative temperatures on the Fahrenheit or Celsius scale can often occur in winter; in physics, however, they were so far impossible. On the absolute temperature scale ...
Physicists propose Higgs boson 'portal' as the source of this elusive entity
One of the biggest mysteries in contemporary particle physics and cosmology is why dark energy, which is observed to dominate energy density of the universe, has a remarkably small (but not zero) value. This value is so small, ...
Closest Type Ia supernova in decades solves a cosmic mystery
Type Ia supernovae (SN Ia's) are the extraordinarily bright and remarkably similar "standard candles" astronomers use to measure cosmic growth, a technique that in 1998 led to the discovery of dark energy ...
Physicists propose mechanism that explains the origins of both dark matter and 'normal' matter
Dark Energy Camera unveils small objects in solar system
The 570-megapixel Dark Energy Camera, built at DOE's Fermilab and mounted on the 4-meter Victor Blanco Telescope in Chile, delivers some of the most detailed images of celestial objects. While about a third ...
Universe older than it looks
When astronomers (Bond 2013) first dated the star HD 140283, which lies a mere 190 lightyears from Earth in the constellation of Libra, they were puzzled. This rare, star appeared to be rather ancient and ...