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Results 21 - 40 of 235.


Environment - Astronomy / Space Science - 24.11.2017
Can citizen scientists locate the world’s seagrass?
Citizen scientists have the potential to secure a future for seagrass meadows by collecting new data about the meadows globally, according to the lead author of a new study and a scientific adviser for BBC's Blue Planet II . Led by Cardiff University's Sustainable Places Research Institute along with Swansea University and James Cook University in Australia, the study suggests that citizen scientists may be key to helping answer global questions about seagrass meadows, their location, health, reproductive status and associated fauna.

Physics - Astronomy / Space Science - 23.11.2017
Antarctic telescope shows how the Earth stops high-energy particles
The IceCube Laboratory at the Amundsen-Scott South Pole Station, in Antarctica, hosts the computers collecting raw data. Due to satellite bandwidth allocations, the first level of reconstruction and event filtering happens in near real-time in this lab. Only events selected as interesting for physics studies are sent to UW-Madison, where they are prepared for use by any member of the IceCube Collaboration.

Physics - Astronomy / Space Science - 22.11.2017
How the Earth Stops High-Energy Neutrinos in Their Tracks
How the Earth Stops High-Energy Neutrinos in Their Tracks
IceCube has measured for the first time the probability that neutrinos are absorbed by Earth as a function of their energy and the amount of matter that they go through. This measurement of the neutrino cross section using Earth absorption has confirmed predictions from the Standard Model to energies up to 980 TeV.

Physics - Astronomy / Space Science - 22.11.2017
Icebound detector reveals how ghostly neutrinos are stopped cold
Famously, neutrinos, the nearly massless particles that are a fundamental component of the universe, can zip through a million miles of lead without skipping a beat. Now, in a critical measurement that may one day help predict new physics beyond the Standard Model of particle physics - the model that seeks to explain the fundamental forces of the universe - an international team of researchers with the IceCube Neutrino Observatory has shown how energized neutrinos can be stopped cold as they pass through the Earth.

Astronomy / Space Science - Earth Sciences - 22.11.2017
Frictional Heat Powers Hydrothermal Activity on Enceladus
Frictional Heat Powers Hydrothermal Activity on Enceladus
Heat from the friction of rocks caused by tidal forces could be the "engine" for the hydrothermal activity on Saturn's moon Enceladus. This presupposes that the moon has a porous core that allows water from the overlying ocean to seep in, where the tidal friction exerted on the rocks heats it. This shows a computer simulation based on observations from the European-American Cassini-Huygens mission.

Astronomy / Space Science - Earth Sciences - 21.11.2017
Mars might be drier than previously thought
Mars might be drier than previously thought
The wall of the Newton Crater on Mars. The dark thick lines spread out horizontally in the picture while the Recurring Slope Lineae run downwards. Credit C. Dundas NASA/JPL/USGS Dark features previously proposed as evidence for significant liquid water flowing on Mars have now been identified as granular flows, where sand and dust move rather than liquid water, according to a new study.

Physics - Astronomy / Space Science - 16.11.2017
Observatory in Mexico sheds light on origin of excess positrons in outer space
Observatory in Mexico sheds light on origin of excess positrons in outer space
Some scientists speculate these extra positrons have an exotic origin, such as yet-undetected processes involving dark matter. HAWC, with its wide field of view, measures the gamma rays made by the positrons as they move away from the pulsar. And we see the positrons are not moving fast enough to make it to Earth.

Astronomy / Space Science - 16.11.2017
UofG astrophysicists welcome latest gravitational wave observation
A new gravitational wave observation is providing cause for celebration at the University of Glasgow's School of Physics and Astronomy. In a new paper published today, the LIGO Scientific Collaboration and the Virgo Collaboration announced another gravitational wave discovery - this time the collision of the lightest pair of binary black holes seen by the collaborations' detectors since the first detection in February 2016.

Physics - Astronomy / Space Science - 15.11.2017
Still no sign of dark matter
Still no sign of dark matter
Measurements at the Paul Scherrer Institute PSI further constrain theories about the nature of dark matter Experts are largely in agreement that a major portion of the mass in the universe consists of so-called dark matter. Its nature, however, remains completely obscure. One kind of hypothetical elementary particle that might make up the dark matter is the so-called axion.

Physics - Astronomy / Space Science - 15.11.2017
Hunt for dark matter is narrowed by new University of Sussex research
Hunt for dark matter is narrowed by new University of Sussex research
Hunt for dark matter is narrowed by new University of Sussex research Scientists at the University of Sussex have disproved the existence of a specific type of axion - an important candidate ‘dark matter' particle - across a wide range of its possible masses. The data were collected by an international consortium, the Neutron Electric Dipole Moment (nEDM) Collaboration, whose experiment is based at the Paul Scherrer Institut in Switzerland.

Astronomy / Space Science - Physics - 14.11.2017
Vitamin D linked to better live birth rates in women undergoing assisted reproduction treatment
An international team of astronomers have discovered, for the first time, observational evidence in how some features at the surface of the hot massive supergiant star ‘Zeta Puppis' induce the formation of fundamental structures in its wind. In contrast to cool low-mass stars like the Sun, hot massive stars are scarce, possess extremely strong winds, and catastrophically end their lives as supernovae that stir up and enrich the interstellar medium with chemical elements involved in the creation of new stars and even planets like Earth.

Astronomy / Space Science - Physics - 07.11.2017
Call for Europe-wide screening of babies for heart defects
For the first time, scientists have directly detected gravitational waves - ripples in space and time - in addition to light from the spectacular collision of two neutron stars. This is the first time that astronomers have been able to study the same event with both gravitational waves and light. The discovery was made using the U.S.-based Laser Interferometer Gravitational-Wave Observatory (LIGO); the Europe-based Virgo detector, and some 70 groundand space-based observatories.

Astronomy / Space Science - Environment - 07.11.2017
First coast-to-coast land motion map of Scotland derived from satellite radar images
The first country-wide map of relative land motion has been created by a team at the University of Nottingham. Using hundreds of satellite radar images the team, working with Geomatic Ventures Limited (GVL), an innovative University spin-out company, created a complete map of mainland Scotland. The map covers a two-year period from 2015 to 2017 and was created using Intermittent Small Baseline (ISBAS) analysis, a novel satellite remote sensing technique.

Astronomy / Space Science - 06.11.2017
A "cosmic snake" reveals the structure of remote galaxies
Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies' For around a decade, the Hubble telescope has been allowing astronomers to observe solar systems that are six or seven billion light years away. Hubble suggests that there are existing galaxies of nebulae and star clusters with a diameter of over 3000 light-years.

Astronomy / Space Science - 03.11.2017
Cold dust discovered around nearest star Proxima Centauri
Cold dust discovered around nearest star Proxima Centauri
Dust detected around the closest star to the solar system, Proxima Centauri, may indicate the presence of an elaborate planetary system. The observations, presented in Astrophysical Journal Letters, were made at The ALMA Observatory in Chile by researchers from the Instituto de Astrofísica de Andalucía (CSIC) and Queen Mary University of London (QMUL).

Astronomy / Space Science - 31.10.2017
’Monster’ planet discovery challenges formation theory
A giant planet - the existence of which previously thought extremely unlikely - discovered around a small star by an international collaboration of astronomers, with University of Warwick taking a leading role NGTS-1b is the largest planet compared to the size of its companion star ever discovered in universe - contradicts theories that a planet of this size could not be formed by such a small star Discovered using the state-of-the-art Next-Gene

Astronomy / Space Science - 26.10.2017
New evidence for dark matter makes it even more exotic
New evidence for dark matter makes it even more exotic
Looking at massive galaxy clusters, EPFL astronomers have observed that their brightest galaxies within them "wobble" - an unexpected phenomenon in current models. The discovery, published in MNRAS, adds to the body of evidence of dark matter beyond the Standard Cosmological Model (?CDM). Figure: Abell S1063, a galaxy cluster, was observed by the NASA/ESA Hubble Space Telescope as part of the Frontier Fields programme.

Astronomy / Space Science - Earth Sciences - 26.10.2017
Ocean sound waves may reveal location of incoming objects
Ocean sound waves may reveal location of incoming objects
The ocean can seem like an acoustically disorienting place, with muffled sounds from near and far blending together in a murky sea of noise. Now an MIT mathematician has found a way to cut through this aquatic cacaphony, to identify underwater sound waves generated by objects impacting the ocean's surface, such as debris from meteorites or aircraft.

Astronomy / Space Science - Continuing Education - 23.10.2017
Formation of Magma Oceans on exoplanet
Formation of Magma Oceans on exoplanet
Induction heating can completely change the energy budget of an exoplanet and even melt its interior. In a study published by Nature Astronomy an international team led by the Space Research Institute of the Austrian Academy of Sciences with participation of the University of Vienna explains how magma oceans can form under the surface of exoplanets as a result of induction heating.

Astronomy / Space Science - 17.10.2017
In search of the ninth planet
In search of the ninth planet
ANN ARBOR-A University of Michigan doctoral student has logged two pieces of evidence that may support the existence of a planet that could be part of our solar system, beyond Neptune. Some astronomers think this alleged planet, called Planet Nine, exists because of the way some objects in space, called "Trans-Neptunian Objects," or TNOs, behave.

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