The Milky Way, the galaxy we live in, is part of a cluster of more than 50 galaxies that make up the 'Local Group', a collection that includes the famous Andromeda galaxy and many other far smaller objects. Now a Russian-American team have added to the canon, finding a tiny and isolated dwarf galaxy almost 7 million light years away.
Dec 22nd, 2014
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One type of aurora is known as a 'theta aurora' because seen from above it looks like the Greek letter theta - an oval with a line crossing through the centre. While the cause of the auroral oval emissions is reasonably well understood, the origin of the theta aurora was unclear until now.
Dec 18th, 2014
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To paraphrase Mark Twain, the report of the Kepler spacecraft's death was greatly exaggerated. Despite a malfunction that ended its primary mission in May 2013, Kepler is still alive and working. The evidence comes from the discovery of a new super-Earth using data collected during Kepler's 'second life'.
Dec 18th, 2014
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An examination of middle-aged star clusters reveals an unexpectedly narrow age range among their stars, suggesting that large groups of stars evolve differently than previously understood.
Dec 17th, 2014
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Astronomers have discovered that black holes don't have to be nearly so powerful to shut down star formation. By observing the dust and gas at the center of NGC 1266, a nearby lenticular galaxy with a relatively modest central black hole, the astronomers have detected a 'perfect storm' of turbulence that is squelching star formation in a region that would otherwise be an ideal star factory.
Dec 17th, 2014
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This spectacular image of the star cluster Messier 47 was taken using the Wide Field Imager camera, installed on the MPG/ESO 2.2-meter telescope at ESO's La Silla Observatory in Chile. This young open cluster is dominated by a sprinkling of brilliant blue stars but also contains a few contrasting red giant stars.
Dec 17th, 2014
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Study finds an exoplanet, tilted on its side, could still be habitable if covered in ocean.
Dec 17th, 2014
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NASA's Mars Curiosity rover has measured a tenfold spike in methane, an organic chemical, in the atmosphere around it and detected other organic molecules in a rock-powder sample collected by the robotic laboratory's drill.
Dec 16th, 2014
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Early discoveries by NASA's newest Mars orbiter are starting to reveal key features about the loss of the planet's atmosphere to space over time.
Dec 15th, 2014
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Astronomers could soon be able to find rocky planets stretched out by the gravity of the stars they orbit, according to a group of researchers.
Dec 15th, 2014
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New Research describes how recreating isotopes that occur when a star explodes, can help physicists understand where life-supporting elements may be found in space.
Dec 12th, 2014
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For the first time researchers have measured large distances in the Universe using data, rather than calculations related to general relativity.
Dec 12th, 2014
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Astronomers using the Atacama Large Millimeter/submillimeter Array may have detected the dusty hallmarks of an entire family of Pluto-size objects swarming around an adolescent version of our own Sun.
Dec 12th, 2014
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An interstellar mystery of why stars form has been solved thanks to the most realistic supercomputer simulations of galaxies yet made. Theoretical astrophysicists found that stellar activity - like supernova explosions or even just starlight - plays a big part in the formation of other stars and the growth of galaxies.
Dec 11th, 2014
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First measurements by the Rosetta mission's ROSINA instrument show that the deuterium-to-hydrogen (D/H) ratio of the comet 67P/Churyumov-Gerasimenko is highly enriched in deuterium. These results contradict the theory that the water present in the Earth's atmosphere and oceans has a cometary origin.
Dec 11th, 2014
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Scientists have picked up an atypical photon emission in X-rays coming from space, and say it could be evidence for the existence of a particle of dark matter. If confirmed, it could open up new perspectives in cosmology.
Dec 11th, 2014
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An experiment, scheduled to go aboard the International Space Station, will explore the effects of weightlessness and low-dose radiation.
Dec 10th, 2014
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With the Atacama Large Millimeter/submillimeter Array (ALMA) observation, astronomers found spiral arms of molecular gas and dust around the 'baby twin' stars, binary protostars. Gas motions to supply materials to the twin were also identified.
Dec 9th, 2014
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