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Cosmic strings might emit cosmic sparks, answer cosmological questions

(PhysOrg.com) -- For astronomers, understanding what happened in the early moments of the universe could answer many questions in physics and astronomy. One possible player in the early universe is cosmic strings, which arise naturally in particle physics models. However, cosmic strings are quite strange hypothetical entities: they’re thinner than a proton, but can be as long as the universe. Cosmic strings might have formed as imperfections when the early universe was undergoing drastic phase changes.

Dead Star Shines BrightPowerful Cosmic Collision Creates Divorce of MatterGalaxy Surprise Sheds Light on Dark MatterScientists See Moon as Research Outpost, Training GroundPhoto Shows Stars Born in Huge Cosmic WombsMelting Glaciers Sculpted Mars Gull

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Cosmic eye sheds light on early galaxy formation

The Cosmic Eye showing the foreground galaxy in yellow at the centre of the image surrounded by the blue arc of the distant galaxy. Credit: Mark SwinbankDurham University

Dark Matter is Missing From Cosmic Voids

Cosmic voids really are devoid of matter. Astronomers have found that even the pervasive 'dark matter' which accounts for about 80% of the mass of the universe is not present in these voids, which are areas of vast emptiness in space that can be tens of millions of light-years across. "Astronomers have wondered for a quarter-century whether these voids were 'too big' or 'too empty' to be explained by gravity alone," said University of Chicago researcher Jeremy Tinker, who led the new study using data from the Sloan Digital Sky Survey II (SDSS-II). "Our analysis shows that the voids in these surveys are exactly as big and as empty as predicted by the 'standard' theory of the universe."

Cosmic Log: Cassini's closest encounter

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: The plan to revive Hubble

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: McCain's planetarium problem

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: How much is that in Apollos?

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: Why outer space is expanding

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: Download the cosmos

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: We're in good company

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: Good company

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: Pay-as-you-go power

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: The FAA's vision for spaceflight

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: Join the planet debate

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Cosmic Log: Big-bang machine?s big day set

Quantum fluctuations in space, science, exploration and other cosmic fields... served up regularly by MSNBC.com science editor Alan Boyle since 2002.

Powerful Cosmic Collision Creates Divorce of Matter

NASA's Hubble Space Telescope and Chandra X-ray Observatory show dark matter from each cluster appearing to pass through the cosmic mess unscathed, leaving ordinary matter behind in the galactic pileup.

Keck Telescope and "Cosmic Lens" Team-up to Demonstrate Eventual Power of Thirty Meter Telescope

Astronomers at the California Institute of Technology (Caltech) and their colleagues used a rare cosmic alignment and modern adaptive optics to image a distant galaxy with similar exquisite resolution promised by the future Thirty Meter Telescope (TMT). This achievement provided detailed insight into the nature of a young star-forming galaxy as it appeared only two billion years after the Big Bang, and determined how that galaxy may eventually evolve to become a system like our own Milky Way.

Origin Of Some Cosmic Dust Is Discovered

An Imperial College London scientist says he's discovered some of the microscopic meteorites making up cosmic dust originate from an ancient asteroid belt.

Scientist Locates Origin Of Cosmic Dust

The origin of the microscopic meteorites that make up cosmic dust has been revealed for the first time in new research out Sept. 1, 2008.

Space telescope unveils cosmic mysteries

A new space telescope revealed the glowing gas of the Milky Way, pulsating stars and a flaring faraway galaxy as it began its mission to unveil the mysteries of cosmic gamma rays, NASA said.

Amateur astronomer spies gassy 'cosmic ghost'

Chicago - A Dutch primary school teacher and amateur astronomer has discovered what some are calling a "cosmic ghost," a strange, gaseous object with a hole in the middle that may represent a new class of astronomical object.

Amateur astronomer spies gassy "cosmic ghost"

CHICAGO (Reuters) - A Dutch primary school teacher and amateur astronomer has discovered what some are calling a "cosmic ghost," a strange, gaseous object with a hole in the middle that may represent a new class of astronomical object.

Students from US University build and launch a cosmic radiation detector into space

Students from OSU's (Oklahoma State University's) Radiation Physics Laboratory have built and successfully launched a cosmic radiation detector that has reached the edge of outer space.

Students from US University build and launch a cosmic radiation detector into space

Students from OSU's (Oklahoma State University's) Radiation Physics Laboratory have built and successfully launched a cosmic radiation detector that has reached the edge of outer space.

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