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
Long-Sought Dark Matter 'Particle' Found in Exotic Material on Earth
It was predicted four decades ago, but only found now.
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 ...
A Giant Galaxy Orbiting Our Own Just Appeared Out of Nowhere
Astronomers scanning the skies just got a huge surprise. They discovered a gigantic galaxy orbiting our own, where none had been seen before. It just came ou...
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.
The Most Detailed Map to Date of Our Place in the Universe
This is the most detailed map of our universe. It spans more than 500 million light-years and contains more then 100,000 galaxies.
Our Universe Has Trillions of Galaxies, 10 Times More Than Thought, Hubble Study Shows
A new study using the Hubble Space Telescope and other telescopes has increased the estimate of galaxies in the Universe ten fold. It was previously estimate...
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.
Hubble Cosmic Origins: "Galaxies are Ejecting Vital Raw Building Materials of the Universe"
"Previously, we thought that these heavier elements would be recycled in to future generations of stars and contribute to building planetary systems," said Benjamin Oppenheimer, a research associate i...
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...
Light from Ancient Galaxies Illuminates 40-Year Mystery of Early Universe
Early galaxies are shining light on a decades-old mystery, helping to clear up the size and composition of the clouds of gas responsible for forming their neighbors.
Brightest Galaxy In The Universe Is 'Ripping Itself Apart' Due To Turbulence
Santiago, Chile – The brightest galaxy humans have ever known is facing an extreme turbulence that’s leading it to collapse. Surrounded by a thick dust barrier, the infrared glow of the most luminous ...
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.
Did 'Dark Matter' Or A Star Called Nemesis Kill The Dinosaurs?
The dinosaur extinction 66m years ago was most likely caused by a comet or big asteroid hitting the Earth. But given that asteroids don't actually hit our planet very often, could this really be the w...
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
Galaxy
A galaxy is a gravitationally bound system consisting of stars, stellar remnants, interstellar gas and dust, and dark matter. The word galaxy is derived from the Greek galaxias (γαλαξίας), literally "...
Galaxy - Wikipedia
Galaxy cluster
A galaxy cluster or cluster of galaxies is a structure that consists of anywhere from hundreds to thousands of galaxies bound together by gravity. They are the largest known gravitationally bound stru...
Galaxy cluster - Wikipedia
Galaxy filament
In physical cosmology, galaxy filaments, also called supercluster complexes, great walls, or great attractors, are amongst the largest known cosmic structures in the universe. They are massive, thread...
Galaxy superclusters
Superclusters are large groups of smaller galaxy clusters or galaxy groups and are among the largest known structures of the cosmos. The Milky Way is in the Local Group of galaxies, which in turn is i...
Galaxy superclusters - Wikipedia
Long-Sought Dark Matter 'Particle' Found in Exotic Material on Earth
It was predicted four decades ago, but only found now.
Vorontsov-Vel'yaminov Interacting Galaxies
Vorontsov-Vel'yaminov Interacting Galaxies are those included in the Atlas and Catalogue of Interacting Galaxies, by B.A. Vorontsov-Vel'yaminov, R.I. Noskova and V.P. Arkhipova. It was published by th...
ELKO field
In cosmology and theoretical physics the ELKO field is a dark matter candidate.The ELKO field was originally suggested in 2005 by D. V. Ahluwalia (then, under the name Ahluwalia-Khalilova) and D. Grum...
Dark flow
Dark flow is an astrophysical term describing a possible non-random component of the peculiar velocity of galaxy clusters. The actual measured velocity is the sum of the velocity predicted by Hubble'...