Science

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ESA listens in on black hole mission

European and Russian specialists recently worked together to catch signals from an astrophysical observatory mission, now mapping X-ray sources in our galaxy and beyond, discovering previously unknown supermassive black holes.

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Illustration of the Spektr-RG spacecraft.

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X-ray scattering enables closer scrutiny of the interior of planets and stars

Recreating extreme conditions in the lab, like those in the interior of planets and stars, is very complex and can only be achieved for fractions of a second. An international research team led by the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) has now presented a new, very precise method of evaluating the behavior of mixtures of different elements under high pressure with the help of X-ray scattering. The results hone previous measurements and reinforce the premise that the matter in planets like Neptune and Uranus can alter dramatically: the hot hydrocarbon mixture in the interior of the ice giants can produce a kind of diamond rain, as the researchers report in Nature Communications (DOI: 10.1038/s41467-020-16426-y).

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By using a new measuring method – the so-called X-ray Thomson scattering – an international team of researchers was able to prove that the high pressure inside planets like Neptune or Uranus dissolves hydrocarbons into its individual parts and converts the released carbon atoms into diamond structures. Thanks to the new measuring method, such conditions, which experts call warm, dense matter and which do not occur naturally on Earth, can be examined more closely.

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Young Planets Bite the Dust

These orange swirls of dust are snapshots from the largest collection of sharp, detailed images of dusty debris disks around young stars — published this week by an international group of astronomers. The images — captured by the 8-meter Gemini South telescope using the Gemini Planet Imager — illustrate the variety of shapes and sizes that stellar systems can take during their infancy. Unexpectedly, the majority of these systems display evidence of planet formation.

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Six circumstellar disks selected from the larger sample of 26 disks obtained with the Gemini South telescope in Chile using the Gemini Planet Imager (GPI). These images highlight the diversity of shapes and sizes that these disks can take and show the outer reaches of star systems in their formative years.

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LIGO-Virgo Finds Mystery Object in "Mass Gap"

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In August of 2019, the LIGO-Virgo gravitational-wave network witnessed the merger of a black hole with 23 times the mass of our sun and a mystery object 2.6 times the mass of the sun. Scientists do not know if the mystery object was a neutron star or black hole, but either way it set a record as being either the heaviest known neutron star or the lightest known black hole.

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To catch an interstellar visitor, use a solar-powered space slingshot

MIT research proposal for rendezvous missions with interstellar objects selected for NASA Innovative Advanced Concepts Program.

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To ensure the best coverage of our solar system, MIT Assistant Professor Richard Linares envisions a constellation of "statites" that communicate and work together, only activating the statite in the optimum position to fly by or rendezvous with an interstellar object successfully. Other statites in the constellation can continue to wait for the next ISO to appear.

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Introducing a New Isotope: Mendelevium-244

Berkeley Lab-led team creates a new, lighter form of the element mendelevium in experiments at the 88-Inch Cyclotron

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A model showing the 101 electrons orbiting the element mendelevium.

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This Enigmatic Protein Sculpts DNA to Repair Harmful Damage

Scientists have determined how a protein called XPG binds to and reshapes damaged DNA, illuminating its role in averting genetic disease and cancer

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Sometimes, when something is broken, the first step to fixing it is to break it even more.

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Young Giant Planet Offers Clues to Formation of Exotic Worlds

Jupiter-size planets orbiting close to their stars have upended ideas about how giant planets form. Finding young members of this planet class could help answer key questions.

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This animation shows a type of gas giant planet known as a hot Jupiter that orbits very close to its star. Finding more of these youthful planets could help astronomers understand how they formed and if they migrate from cooler climes during their lifetimes.

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Satellites Have Drastically Changed How We Forecast Hurricanes

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Satellites Have Drastically Changed How We Forecast Hurricanes

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NASA Observes Large Saharan Dust Plume Over Atlantic Ocean

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On June 18, 2020, NASA-NOAA’s Suomi NPP satellite captured this visible image of the large light brown plume of Saharan dust over the North Atlantic Ocean. The image showed that the dust from Africa’s west coast extended almost to the Lesser Antilles in the western North Atlantic Ocean.