Big Bang
The Big Bang theory is the prevailing cosmological model for the earliest known periods of the universe and its subsequent large-scale evolution. It states that the Universe was in a very high density...
Big Bang - Wikipedia
Hunting the mysterious dark photon: the NA64 experiment
NA64 is a new experiment at CERN searching for a particle called the dark photon, which might act as a bridge to the universe’s invisible, dark sector. Read more: http://cern.ch/go/7FZ7 Produced by:...
Astronomers Have Captured The First Images of Dark Matter That Holds Galaxies Together
The known universe contains trillion of galaxies with billions of stars in it. Looking at the big picture, the galaxies in universe are connected to each other by an invisible web of dark matter. Due ...
"The Black Hole Paradox" --New Theory Says Soon After Big Bang, Black Holes Lit Up the Universe
Soon after the Big Bang, the universe went completely dark. The intense, seminal event that created the cosmos churned up so much hot, thick gas that light was completely trapped. Much later—perhaps a...
Vera Rubin, Astrophysicist Who Confirmed Existence Of Dark Matter, Dies At 88
The astrophysicist's groundbreaking research on spiral galaxies provided evidence of invisible dark matter. She was a pioneer in an era when women were excluded from many astronomy programs.
Quantum Physicists Probe Fabric of Spacetime to Solve Mystery of Dark Energy
One of the great mysteries of the cosmos is why it is expanding at an apparently accelerating rate. Physicists have suggested an outward force, dubbed "dark energy," causes this expansion, but they ha...
New Scientific Study Suggests Advanced Alien civilizations could have existed Before the Big Bang
Professor Roger Penrose from the University of Oxford (UK) and Vaha Gurzadian from the Center for Cosmology and Astrophysics, Alikhanian National Laboratory and Yerevan State University, Yerevan, Arme...
Dark matter may just be a bunch of ancient black holes
An invisible "dark matter" outweighs all the stars in space by 4:1. But gravitational waves may soon unmask the shadowy culprit.
Could black holes be the dark matter everyone has been looking for?
As we wait for more LIGO results, a maverick theory pops up
Elusive Dark Matter Galaxy Revealed By Cosmic Lens
An invisible dark-matter galaxy hides in the edges of another larger galaxy serving as a natural magnifying glass. Astronomers probing the sky used the gravity of a massive galaxy as a natural magnif...
4977 BC Universe Is Created, According To Kepler - April 27
On this day in 4977 B.C., the universe is created, according to German mathematician and astronomer Johannes Kepler, considered a founder of modern science. Kepler is best known for his theories expla...
Neutral Result Charges Up Antimatter Research
Scientists of the international ALPHA Collaboration have once again pushed the boundaries of antimatter research with their latest breakthrough studying the properties of antihydrogen. Published today...
Photographic Plates of the Stars, Taken by Edwin Hubble, George Ellery Hale, Walter Baade, and More
On a clear Christmas morning atop Mount Wilson, before the first tentacles of dawn struck the Los Angeles sprawl 5,700 feet below,…
The end of physics as we know it
"We will never be able to answer the question why is there something rather than nothing."
How Axions May Explain Time’s Arrow
The irreversibility of time may be a clue as to what makes up the universe’s dark matter.
History of the Big Bang theory
The history of the Big Bang theory began with the Big Bang's development from observations and theoretical considerations. Much of the theoretical work in cosmology now involves extensions and refinem...
History of the Big Bang theory - Wikipedia
Chronology of the universe
The chronology of the universe describes the history and future of the universe according to Big Bang cosmology, the prevailing scientific model of how the universe developed over time from the Planck...
Chronology of the universe - Wikipedia
Big Bang nucleosynthesis
In physical cosmology, Big Bang nucleosynthesis (abbreviated BBN, also known as primordial nucleosynthesis) is to the production of nuclei other than those of the lightest isotope of hydrogen (hydroge...
Big Bang nucleosynthesis - Wikipedia
Galaxy formation and evolution
The study of galaxy formation and evolution is concerned with the processes that formed a heterogeneous universe from a homogeneous beginning, the formation of the first galaxies, the way galaxies cha...
Galaxy formation and evolution - Wikipedia
Large-scale structure of the cosmos
The observable universe consists of the galaxies and other matter that can, in principle, be observed from Earth at the present time because light and other signals from these objects has had time to ...
Large-scale structure of the cosmos - Wikipedia
Metric expansion of space
The metric expansion of space is the increase of the distance between two distant parts of the universe with time. It is an intrinsic expansion whereby the scale of space itself changes. This is diffe...
Metric expansion of space - Wikipedia
Cosmological horizon
A cosmological horizon is a measure of the distance from which one could possibly retrieve information. This observable constraint is due to various properties of general relativity, the expanding uni...
Hubble's law
Hubble's law is the name for the observation in physical cosmology that: (1) objects observed in deep space (extragalactic space, ~10 megaparsecs or more) are found to have a Doppler shift interpretab...
Cosmic microwave background radiation
The cosmic microwave background (CMB) is the thermal radiation left over from the "Big Bang" of cosmology. In older literature, the CMB is also variously known as cosmic microwave background radiatio...
Cosmic microwave background radiation - Wikipedia
Horizon problem
The horizon problem is a problem with the standard cosmological model of the Big Bang which was identified in the late 1960s, primarily by Charles Misner. It points out that different regions of the u...
Flatness problem
The flatness problem (also known as the oldness problem) is a cosmological fine-tuning problem within the Big Bang model of the Universe. Such problems arise from the observation that some of the init...
Magnetic monopole
A magnetic monopole is a hypothetical elementary particle in particle physics that is an isolated magnet with only one magnetic pole (a north pole without a south pole or vice versa). In more technica...
Baryon asymmetry
The baryon asymmetry problem in physics refers to the fact that there is an imbalance in baryonic matter and antibaryonic matter in the observable universe. Neither the standard model of particle phys...
Dark matter
Dark matter is a hypothetical kind of matter that cannot be seen with telescopes but accounts for most of the matter in the Universe. The existence and properties of dark matter are inferred from its ...
Dark matter - Wikipedia