news 2013



Results 81 - 100 of 169.

Astronomy / Space - Physics - 20.06.2013
Dusty black holes could affect galaxy growth, scientists say
We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue. New evidence showing that black holes eject dusty matter from their surroundings, potentially affecting the growth of galaxies, has been revealed by an international team of scientists.

Earth Sciences - Astronomy / Space - 20.06.2013
Mars had oxygen-rich atmosphere 4000m years ago
Mars had oxygen-rich atmosphere 4000m years ago
Differences between Martian meteorites and rocks examined by a NASA rover can be explained if Mars had an oxygen-rich atmosphere 4000 million years ago - well before the rise of atmospheric oxygen on Earth 2500m years ago. Scientists from Oxford University investigated the compositions of Martian meteorites found on Earth and data from NASA's 'Spirit' rover that examined surface rocks in the Gusev crater on Mars.

Astronomy / Space - 20.06.2013
Key link found in Cosmic Distance Ladder
Key link found in Cosmic Distance Ladder
When observing the bright explosion of a White Dwarf star in our neighbouring galaxy last year, researchers from The Australian National University collected the largest ever data set on what they recognised as one of our best 'standard candles' yet for distance measurements in the Universe. "We know how a candle of a particular brightness grows fainter as it is moved further away from us.

Environment - Astronomy / Space - 19.06.2013
Earth Explorers take centre stage at Le Bourget
19 June 2013 ESA's new Biomass mission and the numerous accomplishments from the existing Earth Explorer satellites came into focus today at the Paris Air and Space Show. The recently selected Biomass satellite will measure the amount of biomass and carbon stored in the world's forests with greater accuracy than ever before.

Astronomy / Space - Physics - 13.06.2013
Cosmic giants shed new light on dark matter
Astronomers at the University of Birmingham, Academica Sinica in Taiwan, and the Kavli Institute of Physics and Mathematics of the Universe in Japan, have found new evidence that the mysterious dark matter that pervades our universe behaves as predicted by the 'cold dark matter' theory known as 'CDM'.

Earth Sciences - Astronomy / Space - 04.06.2013
Pebbles and sand on Mars best evidence that a river ran through it
Pebbles and sand scattered near an ancient Martian river network may present the most convincing evidence yet that the frigid deserts of the Red Planet were once a habitable environment traversed by flowing water. Scientists with NASA's Mars Science Laboratory mission reported May 30 the discovery of sand grains and small stones that bear the telltale roundness of river stones and are too heavy to have been moved by wind.

Astronomy / Space - 03.06.2013
Galaxy in its death throes may hold clues to birth of dwarf systems
A bright dwarf galaxy relatively close to Earth's Milky Way and trailing fireballs is the first clear example of a galaxy in the act of dying, scientists argue in new research. The work gives a known galaxy new status and offers the potential for better understanding of the mysterious origin of dwarf elliptical galaxies, a subspecies of the universe's most common type of galaxy.

Astronomy / Space - 29.05.2013
Pebbles help explain Mars' watery past
Pebbles help explain Mars’ watery past
The discovery of sand and pebbles that have turned to rock has provided the most definitive proof yet of ancient water flow on the Mars. Professor Gupta in the video slide show talks about the mission to date and describes the importance of this latest discovery. Professor Sanjeev Gupta, from Imperial College London, and his colleagues from NASA's Mars Science Laboratory mission provide the first-ever observations of ancient river sedimentary deposits in the form of conglomerates, which are pebbles, mixed with sand that have turned to rock.

Astronomy / Space - Physics - 29.05.2013
A New Kind of Cosmic Glitch
The physics behind some of the most extraordinary stellar objects in the Universe just became even more puzzling. A group of astronomers led by McGill researchers using NASA's Swift satellite have discovered a new kind of glitch in the cosmos, specifically in the rotation of a neutron star. Neutron stars are among the densest objects in the observable universe; higher densities are found only in their close cousins, black holes.

Astronomy / Space - Physics - 23.05.2013
Teams with citizen scientists to solve space mystery
Teams with citizen scientists to solve space mystery
Astrophysicist works with amateur astronomers to confirm theory about light bursts from binary star 370 light-years from Earth. A University of Alberta physicist brought together backyard astronomers and professionals to confirm the mysterious behaviour of two stars more than 300 light-years from Earth.

Astronomy / Space - Mathematics - 23.05.2013
Model of Sun’s magnetic field
Researchers at the Universities of Leeds and Chicago have uncovered an important mechanism behind the generation of astrophysical magnetic fields such as that of the Sun. Scientists have known since the 18th Century that the Sun regularly oscillates between periods of high and low solar activity in an 11-year cycle, but have been unable to fully explain how this cycle is generated.

Astronomy / Space - 22.05.2013
Rare merger reveals secrets of galaxy evolution
22 May 2013 A rare encounter between two gas-rich galaxies spotted by ESA's Herschel space observatory indicates a solution to an outstanding problem: how did massive, passive galaxies form in the early Universe? Most large galaxies fall into one of two major categories: spirals like our own Milky Way that are full of gas and actively forming stars, or gas-poor ellipticals, populated by old cool red stars and showing few signs of ongoing star formation.

Astronomy / Space - 20.05.2013
Media Advisory: Lost in space -- Cancellation of NASA's Kepler mission would hinder exploration of extrasolar planets, Princeton's Bakos says
The potential cancellation of the NASA Kepler satellite mission would mark the end of an unparalleled source of information about planets and planetary systems outside of Earth's solar system, known as exoplanets, according to Princeton University astrophysicist Gáspár Bakos , who studies exoplanets and has discovered more than 40.

Astronomy / Space - Earth Sciences - 16.05.2013
New study assesses glacier contributions to sea level rise
Melting glaciers account for one third of observed sea level rise, according to a new study published today in Science. The research - which used multiple satellites and an extensive collection of ground data - was led by Professor Alex Gardner of Clark University and involved the efforts of 16 researchers from 10 countries, including Dr Bert Wouters from the University of Bristol.

Astronomy / Space - Earth Sciences - 16.05.2013
Glaciers Contribute One Third to Sea Level Rise
Glaciers Contribute One Third to Sea Level Rise
Ninety-nine percent of all of Earth's land ice is locked up in the massive Greenland and Antarctic ice sheets. However, over the period 2003 to 2009, the melting of the world's other land ice stored in glaciers contributed just as much to sea level rise as the two ice sheets combined. This is the result of a new study led by Alex Gardner from Clark University (USA), which has been published in the current issue of the journal Science.

Astronomy / Space - Physics - 16.05.2013
Billion-year-old water could hold clues to life on Earth and Mars
Billion-year-old water could hold clues to life on Earth and Mars
16 May 2013 A UK-Canadian team of scientists has discovered ancient pockets of water, which have been isolated deep underground for billions of years and contain abundant chemicals known to support life. This water could be some of the oldest on the planet and may even contain life. Not just that, but the similarity between the rocks that trapped it and those on Mars raises the hope that comparable life-sustaining water could lie buried beneath the red planet's surface.

Astronomy / Space - Physics - 13.05.2013
New Method of Finding Planets Scores its First Discovery
New Method of Finding Planets Scores its First Discovery
Cambridge, MA - Detecting alien worlds presents a significant challenge since they are small, faint, and close to their stars. The two most prolific techniques for finding exoplanets are radial velocity (looking for wobbling stars) and transits (looking for dimming stars). A team at Tel Aviv University and the Harvard-Smithsonian Center for Astrophysics (CfA) has just discovered an exoplanet using a new method that relies on Einstein's special theory of relativity.

Physics - Astronomy / Space - 08.05.2013
Exotic atoms hold clues to unsolved physics puzzle at the dawn of the universe
Exotic atoms hold clues to unsolved physics puzzle at the dawn of the universe
ANN ARBOR-An international team of physicists has found the first direct evidence of pear shaped nuclei in exotic atoms. The findings could advance the search for a new fundamental force in nature that could explain why the Big Bang created more matter than antimatter-a pivotal imbalance in the history of everything.

Astronomy / Space - 08.05.2013
Join the search for 'space warps'
Join the search for 'space warps'
Online volunteers are being asked to search for 'space warps', very rare massive galaxies that bend light around them so that they act rather like giant lenses in space. By looking through data that has never been seen by human eyes, citizen scientists can help astronomers discover some of the rarest objects in the Universe.

Earth Sciences - Astronomy / Space - 06.05.2013
New analysis suggests wind, not water, formed mound on Mars
A roughly 3.5-mile high Martian mound that scientists suspect preserves evidence of a massive lake might actually have formed as a result of the Red Planet's famously dusty atmosphere, an analysis of the mound's features suggests. If correct, the research could dilute expectations that the mound holds evidence of a large body of water, which would have important implications for understanding Mars' past habitability.