Science

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New argument presented to highlight the axion nature of dark matter

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Kazan Federal University researchers put forth their ideas in Physical Review D.

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Astronomers Discover Unusual Monster Galaxy In The Very Early Universe

XMM-2599 Lived Fast and Died Young

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Artist impression of a massive, dusty galaxy. This is similar to what XMM-2599 looked like in visible light when it was forming its stars.

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Why Uranus and Neptune are different

The two outermost giant planets of the Solar system have similar masses but there are also striking differences. Researchers of the NCCR PlanetS at the University of Zurich have found an explanation for this long-standing unsolved mystery: Two different giant impacts could have had completely separate effects.

Bildschirmfoto-2020-02-04-um-10.50.25_0.jpegUranus (left) and Neptune photographed by Voyager 2.

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Astrobites: Why Are There So Many Sub-Neptune Exoplanets?

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Artist's illustration of a Neptune-like planet. A new study explores why Neptunes are so rare when their smaller cousins, sub-Neptunes, are very common.

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NASA’s MAVEN Explores Mars to Understand Radio Interference at Earth

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Graphic illustrating radio signals from a remote station (bent purple line) interfering with a local station (black tower) after being reflected off a plasma layer in the ionosphere.

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Researchers find way to show how the tiniest particles in our Universe saved us from complete annihilation

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Fig 1: Inflation stretched the initial microscopic Universe to a macroscopic size and turned the cosmic energy into matter. However, it likely created an equal amount of matter and anti-matter predicting complete annihilation of our universe. The authors discuss the possibility that a phase transition after inflation led to a tiny imbalance between the amount of matter and anti-matter, so that some matter could survive a near-complete annihilation. Such a phase transition is likely to lead to a network of "rubber-band"-like objects called cosmic strings, that would produce ripples of space-time known as gravitational waves. These propagating waves can get through the hot and dense Universe and reach us today, 13.8 billion years after the phase transition. Such gravitational waves can most likely be discovered by current and future experiments.

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Today’s Forecast for K2-18b: Cloudy with a Chance of Rain?

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An artist’s impression of K2-18b orbiting K2-18 along with another planet in the system.

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Turning Up the Heat on Antibacterial-Resistant Diseases

A biocompatible polymer designed by Berkeley Lab could accelerate new medical therapies that enlist the power of near-infrared light to fight disease

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Photothermal therapy (PTT) – a proposed treatment for diseases such as antibacterial-resistant infections and cancer – makes use of a chemical agent that absorbs the light of an infrared laser
Scientists at Berkeley Lab’s Molecular Foundry have made a biocompatible material that has potential use in medical therapies that deploy near-infrared light to combat antibacterial-resistant infections and cancer.

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The cosmic cow explained - radio signals point to an explosion and a newborn magnetar

Observations using 21 telescopes of the European VLBI Network (EVN) have revealed that a cosmic explosion, called AT2018cow most likely formed a neutron star with an extremely powerful magnetic field - known as a magnetar. The high-resolution radio images produced in this new study show physical properties of the stellar remnant that make alternative explanations less likely, say scientists.

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The cosmic cow explained - radio signals point to an explosion and a newborn magnetar

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Fast rotating white dwarf drags its space-time in a cosmic dance

How astronomers used Einstein’s theory of general relativity to estimate the rotation of a white dwarf in a binary star system

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The white dwarf-pulsar binary system PSR J1141-6545 discovered by the CSIRO’s Parkes radio telescope. The pulsar orbits its white dwarf companion every 4.8 hours. The white dwarf’s rapid rotation drags space-time around it, causing the entire orbit to change its orientation.