The Sky Tonight

July 14, 2015

What happens when cosmic giants meet galactic dwarfs?
Crawley, Australia (SPX) Jul 14, 2015
When two different sized galaxies smash together, the larger galaxy stops the smaller one making new stars, according to a study of more than 20,000 merging galaxies. The research also found that when two galaxies of the same size collide, both galaxies produce stars at a much faster rate. Astrophysicist Luke Davies, from The University of Western Australia node of the International Centre for Radio Astronomy Research (ICRAR), says our nearest major galactic neighbour, Andromeda, is hurtling on a ... read more

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A galaxy in bloom The ghostly shells of galaxy ESO 381-12 are captured here in a new image from the NASA/ESA Hubble Space Telescope, set against a backdrop of distant galaxies. The strikingly uneven structure and the ... more		Astronomers find a massive black hole that outgrew its galaxy Astronomers have spotted a super-sized black hole in the early universe that grew much faster than its host galaxy. The discovery runs counter to most observations about black holes, which are massi ... more		Almost half of Kyiv without heat, power, after Russian attack Denmark proposes NATO surveillance mission for Greenland Military aircraft to arrive in Greenland for 'long-planned' activities: US-Canadian command		A precocious black hole Black holes can be found at the centres of most galaxies. Most have little mass compared with their host galaxy. ETH researchers, however, have discovered a particularly massive black hole, which cl ... more
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A black hole under the gravitational lens Turbulent processes take place close to supermassive black holes, which lurk in the centres of nearly all galaxies. They swallow up matter flowing in from the outside while at the same time producin ... more		The dark side of galactic radio jets Cosmic microwave radiation points to invisible 'dark matter', marking the spot where jets of material travel at near light speed, according to an international team of astronomers. Lead author Ruper ... more		Heavy snow in US strands drivers in 100-vehicle crash Chile wildfires rage for third day, entire towns wiped out Death toll from floods rises in Mozambique, South Africa		Super-bright supernova with extreme burst of gamma radiation Astronomers from the Niels Bohr Institute have observed a super-bright supernova association with a very unusual long lasting gamma-ray burst. Gamma-ray bursts are in rare cases observed in connecti ... more
A five star, doubly-eclipsing star system Astronomers at the Open University have discovered the first quintuple star system containing two eclipsing binary stars. Details of the five star system, the first of its kind to be found, will be ... more		Bricks to build an Earth found in every planetary system Earth-like planets orbiting other stars in the Milky Way are three times more likely to have the same type of minerals as Earth than astronomers had previously thought. In fact, conditions for makin ... more		Searing Sun Seen in X-rays X-rays light up the surface of our sun in a bouquet of colors in this new image containing data from NASA's Nuclear Spectroscopic Telescope Array, or NuSTAR. The high-energy X-rays seen by NuSTAR ar ... more		Does the solar magnetic field show a North-South divide? A study of jets travelling through the Sun's corona at speeds between 200-500 kilometres per second has shown that the fast-moving columns of plasma are deflected much more strongly by the Sun's mag ... more

	The quantum physics of artificial light harvesting Plants and bacteria make use of sunlight with remarkably high efficiency: nine out of ten absorbed light particles are being put to use in an ordinary bacterium. For years, it has been a press ... more		New computer program may fix billion-dollar bit rot problem Bit rot is a billion-dollar problem for software developers. But now computer engineers may have designed the ideal code-fixing program to combat it. ... more

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