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Two phenomena known to inhibit the potential habitability of planets - tidal forces and vigorous stellar activity - might instead help chances for life on certain planets orbiting low-mass stars, astronomers have found.
Jan 28th, 2015
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Measurement results from ESA's space probe provide a comprehensive picture of 67P/Churyumov-Gerasimenko.
Jan 28th, 2015
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The two hemispheres of Mars are more different from any other planet in our solar system. Non-volcanic, flat lowlands characterise the northern hemisphere, while highlands punctuated by countless volcanoes extend across the southern hemisphere. Although theories and assumptions about the origin of this so-called and often-discussed Mars dichotomy abound, there are very few definitive answers. Geophysicists are now providing a new explanation.
Jan 28th, 2015
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The astrophysics research group at Washington University in St.Louis built an instrument that is capable to measure the polarization properties of X-rays. This instrument, once flown in space, can be used in a novel approach to study the most extreme objects in the Universe, such as black holes and neutron stars.
Jan 28th, 2015
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Like the gaping mouth of a gigantic celestial creature, the cometary globule CG4 glows menacingly in this new image from ESO's Very Large Telescope. Although it appears to be big and bright in this picture, this is actually a faint nebula, which makes it very hard for amateur astronomers to spot. The exact nature of CG4 remains a mystery.
Jan 28th, 2015
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Fresh from giving the January Rossi Prize Lecture, the astrophysicists who discovered 2 enormous radiation bubbles in the center of our galaxy discuss what they may tell us about the Milky Way and how they could help in the search for dark matter.
Jan 27th, 2015
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A Sun-like star with orbiting planets, dating back to the dawn of the Galaxy, has been discovered by an international team of astronomers.
Jan 27th, 2015
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Astronomers have discovered that the ring system that they see eclipse the very young Sun-like star J1407 is of enormous proportions, much larger and heavier than the ring system of Saturn. The ring system - the first of its kind to be found outside our solar system - was discovered in 2012.
Jan 26th, 2015
Read moreXPRIZE, the global leader in incentivized prize competition, today announced that five Google Lunar XPRIZE teams have been awarded a combined US$5.25 million in recognition of key technological advancements toward their quest to land a private spacecraft on the surface of the moon.
Jan 26th, 2015
Read moreA swarm of tiny probes each with a different sensor could be fired into the clouds of Jupiter and grab data as they fall before burning up in the gas giant planet's atmosphere. The probes would last an estimated 15 minutes.
Jan 26th, 2015
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Gravitational theories with broken Lorentz invariance have attracted a great deal of interest as they provide a test-bed of LI and offer a mechanism to improve their ultraviolet behavior, so that the theories may be renormalizable. However in such theories, particles can travel with arbitrary velocities and black holes may not exist at all. In contrast to this expectation, it has been shown that an absolute horizon exists, which traps signals despite infinitely large velocities.
Jan 23rd, 2015
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New laser-driven compression experiments reproduce the conditions deep inside exotic super-Earths and giant planet cores, and the conditions during the violent birth of Earth-like planets, documenting the material properties that determined planet formation and evolution processes.
Jan 23rd, 2015
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Once again, the High Energy Stereoscopic System, H.E.S.S., has demonstrated its excellent capabilities. In the Large Magellanic Cloud, it discovered most luminous very high-energy gamma-ray sources.
Jan 22nd, 2015
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Scientists report early measurements of comet 67P/Churyumov-Gerasimenko's subsurface temperature and production of gas from the surface of its nucleus.
Jan 22nd, 2015
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The RPC-ICA instrument onboard the Rosetta spacecraft has been watching the early stages of how a magnetosphere forms around Comet 67P Churyumov-Gerasimenko as it moves closer to the Sun along its orbit and begins to interact with the solar wind.
Jan 22nd, 2015
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Astronomers have identified the first 'changing look' quasar, a gleaming object in deep space that appears to have its own dimmer switch. The discovery may offer a glimpse into the life story of the universe's great beacons.
Jan 22nd, 2015
Read moreHalf the heavy elements in nature are created during stellar explosions such as supernovae or star collisions. Analyzing deep-sea samples of stardust that fell to Earth over millions of years, researchers made a surprising discovery about how frequently far-away stars produce heavy elements like gold and uranium.
Jan 22nd, 2015
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Geologists uncover hidden magnetic messages from the early solar system in meteorites. The team of scientists has captured information stored inside tiny magnetic regions in meteorite samples.
Jan 22nd, 2015
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