Milky Way-like galaxies in early universe embedded in ‘super halos’

Astronomers have directly observed a pair of Milky Way-like galaxies seen when the universe was only eight percent of its current age. These progenitors of today’s giant spiral galaxies are surrounded by ‘super halos’ of hydrogen gas that extend many tens-of-thousands of light-years beyond their dusty, star-filled disks. …

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Gravitational wave kicks monster black hole out of galactic core

Astronomers have uncovered a supermassive black hole that has been propelled out of the center of the distant galaxy 3C 186. The black hole was most likely ejected by the power of gravitational waves. …

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A New Blast May Have Forged Cosmic Gold

For decades, researchers believed that violent supernovas forged gold and other heavy elements. But many now argue for a different cosmic quarry. …

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Hand-held X-ray sources

Electronic oscillations in graphene could make a tabletop — or even handheld — source of X-rays a reality, report researchers.

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New portal to unveil the dark sector of the universe

Once upon a time, the Universe was just a hot soup of particles. In those days, together with visible particles, other particles to us hidden or dark might have formed. Billions of years later scientists catalogued 17 types of visible particles, with the most recent one being the Higgs boson, creating the ‘Standard Model’. However, they are still struggling to detect the hidden particles, the ones that constitute the dark sector of the Universe. …

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Upper part of Earth’s magnetic field reveals details of a dramatic past

Satellites have been mapping the upper part of the Earth magnetic field by collecting data for three years and found some amazing features about the Earth’s crust. The result is the release of highest resolution map of this field seen from space to date. This ‘lithospheric magnetic field’ is very weak and therefore difficult to detect and map from space. But with the Swarm satellites it has been possible. …

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Ultrafast measurements explain quantum dot voltage drop

Solar cells and photodetectors could soon be made from new types of materials based on semiconductor quantum dots, thanks to new insights based on ultrafast measurements capturing real-time photoconversion processes.

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Fledgling stars try to prevent their neighbors from birthing planets

Stars don’t have to be massive to evaporate material from around nearby stars and affect their ability to form planets, a new study suggests. …

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Universe’s ultraviolet background could provide clues about missing galaxies

Astronomers have developed a way to detect the ultraviolet background of the universe, which could help explain why there are so few small galaxies in the cosmos. …

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Comet 67P full of surprises: Growing fractures, collapsing cliffs and rolling boulders

Images returned from the European Space Agency’s Rosetta mission indicate the surface of comet 67P/Churyumov-Gerasimenko was a very active place during its most recent trip through the solar system, says a new study. …

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