Where Is The Dark Matter?

An illustration of the Milky Way shows the expected distribution of dark matter as a blue halo. Illustration courtesy L. Calçada, ESO

Dark Matter Is Missing In Sun's Neighborhood? -- National Geographic

Substance isn't "where we needed it" to match theories, researcher says.

Dark matter is mysteriously missing from the sun's neighborhood, according to a new study that could provide ammunition for skeptics who argue that the invisible substance is just an illusion.

"There will be people claiming dark matter doesn't exist because of this result," predicted study leader Christian Moni-Bidin, an astronomer at Chile's University of Concepción.

"These observations alone do not prove that dark matter does not exist. Still, it is not where we expected it and where we needed it."

Read more ....

The Search For Dark Energy

The Dark Side Of The Universe -- The Economist

Scientists are trying to understand why the universe is running away from them.

AT FIVE tonnes and 520 megapixels, it is the biggest digital camera ever built—which is fitting, because it is designed to tackle the biggest problem in the universe. On February 20th researchers at the Cerro Tololo Inter-American Observatory (pictured), which sits 2,200 metres (7,200 feet) above sea level in the Atacama desert of northern Chile, will begin installing this behemoth on a telescope called Blanco. It is the centrepiece of the Dark Energy Survey (DES), the most ambitious attempt yet to understand a mystery as perplexing as any that faces physics: what is driving the universe to expand at an ever greater rate.

Read more ....

'Dark Energy' Confirmed

The Anglo-Australian telescope was used in the galaxy survey

New Method 'Confirms Dark Energy' -- BBC

First results from a major astronomical survey using a cutting-edge technique appear to have confirmed the existence of mysterious dark energy.

Dark energy makes up some 74% of the Universe and its existence would explain why the Universe appears to be expanding at an accelerating rate.

The finding was based on studies of more than 200,000 galaxies.

Read more ....

Dark Matter Discovered: Scientists Believe They Have Found Elusive Particle That Makes Up 90% Of Universe

This dark matter map was created by the Hubble Telescope by measuring light from distant stars thought to have been deflected by dark matter. The map of half the Universe reveals dark matter filaments, collapsing under the relentless pull of gravity and growing clumpier over time

From The Daily Mail:

Physicists have detected a particle of dark matter for the first time in human history, a number of U.S laboratories announced today.

Should the findings be confirmed it will have an Earth-shattering effect on our understanding of how galaxies form.

Read more ....

Rumours That First Dark Matter Particle Found

From New Scientist:

The physics blogs are abuzz with rumours that a particle of dark matter has finally been found.

If it is true, it is huge news. Dark matter is thought to make up 90 per cent of the universe's mass and what evidence there is for it remains highly controversial. That's why any news of a sighting is seized upon.

Read more ....