Monday, 13 May 2013
Sunday, 17 March 2013
Friday, 22 February 2013
The universe is far stranger than anything we can truly contemplate. From the big bang, black holes, dark matter, giant diamond stars, and exoplanets coated in burning ice, one truly doesn’t have to look too far to find something that is mind-boggling or hard to comprehend. On today’s list of W-T-F’s, is a relatively new cosmic phenomena called “dark flow.” (I again, find it kind of ironic that we use the word ‘dark’ so often. Each time it usually means ‘we have no idea, really.’)
Saturday, 22 December 2012
The image above is one of the most detailed maps of dark matter in our universe ever created. The location of the dark matter (tinted blue) was inferred through observations of magnified and distorted distant galaxies seen in this picture.
Wednesday, 19 December 2012
Friday, 23 November 2012
Saturday, 17 November 2012
Thursday, 15 November 2012
Wednesday, 14 November 2012
Sunday, 11 November 2012
Friday, 9 November 2012
Wednesday, 7 November 2012
The Great Attractor is a gravity anomaly in intergalactic space within the range of the Centaurus Supercluster that reveals the existence of a localized concentration of mass equivalent to tens of thousands of Milky Ways, observable by its effect on the motion of galaxies and their associated clusters over a region hundreds of millions of light years across.
These galaxies are all redshifted, in accordance with the Hubble Flow, indicating that they are receding relative to us and to each other, but the variations in their redshift are sufficient to reveal the existence of the anomaly. The variations in their redshifts are known as peculiar velocities, and cover a range from about +700 km/s to −700 km/s, depending on the angular deviation from the direction to the Great Attractor.
Quantum information has leapt through the air about 100 kilometers or more in two new experiments, farther and with greater fidelity than ever before. The research brings truly long-distance quantum communication networks, in which satellites could beam encrypted information around the globe, closer to reality.
Tuesday, 6 November 2012
An invisible web thought to span the cosmos has now revealed one of its strands.
That thread is spun of dark matter and connects two titanic clusters of galaxies, some of the most massive objects in the universe. Its discovery supports the idea that galaxy clusters grow at the intersections of such filaments, and its heft backs the claim that filaments hide more than half of all matter.