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Astronomy/Space Science



Results 141 - 160 of 169.


Astronomy / Space Science - Physics - 20.02.2013
A cool discovery about the Sun’s next-door twin
ESA's Herschel space observatory has detected a cool layer in the atmosphere of Alpha Centauri A, the first time this has been seen in a star beyond our own Sun. The finding is not only important for understanding the Sun's activity, but could also help in the quest to discover proto-planetary systems around other stars.

Astronomy / Space Science - Earth Sciences - 19.02.2013
Secrets of Wisconsin meteorite revealed
As Russian scientists scramble to collect and analyze the remains of the historic meteorite that injured an estimated 1,200 people in Chelyabinsk on Feb. 15, scientists in Wisconsin are set to publish their analysis of a smaller meteorite that struck southwest Wisconsin on April 14, 2010. The Mifflin meteorite created a fireball equivalent to 20 tons of TNT, initiating a scientific quest that revealed the complex history of a rocky body that predates Earth's formation.

Astronomy / Space Science - Earth Sciences - 17.02.2013
Water on the moon: It's been there all along
Water on the moon: It’s been there all along
ANN ARBOR-Traces of water have been detected within the crystalline structure of mineral samples from the lunar highland upper crust obtained during the Apollo missions, according to a University of Michigan researcher and his colleagues. The lunar highlands are thought to represent the original crust, crystallized from a magma ocean on a mostly molten early moon.

Astronomy / Space Science - 15.02.2013
GOCE settles debate on sloping sea
For decades, scientists have disagreed about whether the sea is higher or lower heading north along the east coast of North America. Thanks to precision gravity data from ESA's GOCE satellite, this controversial issue has now been settled. The answer? It's lower. Many might assume that the height of the sea is the same everywhere - but this is not true because winds, currents, tides and different temperatures cause seawater to pile up in some regions and dip in others.

Astronomy / Space Science - Physics - 13.02.2013
Cosmic rays come from exploding stars, say Stanford astrophysicists
Cosmic rays come from exploding stars, say Stanford astrophysicists
Stanford Report, February 14, 2013 Researchers use data from an orbiting gamma-ray telescope to settle the issue: cosmic rays do indeed have their origin in exploding supernovas. A new study confirms what scientists have long suspected: Cosmic rays – energetic particles that pelt Earth from all directions – are born in the violent aftermath of supernovas, exploding stars throughout the galaxy.

Environment - Astronomy / Space Science - 13.02.2013
CryoSat reveals major loss of Arctic sea ice
An international team of scientists using new measurements from ESA's ice mission has discovered that the volume of Arctic sea ice has declined by 36% during autumn and 9% during winter between 2003 and 2012. Satellite records show a constant downward trend in the area covered by Arctic sea ice during all seasons, but in particular in summer.

Environment - Astronomy / Space Science - 13.02.2013
European satellite confirms UW numbers: Arctic Ocean is on thin ice
European satellite confirms UW numbers: Arctic Ocean is on thin ice
The September 2012 record low in Arctic sea-ice extent was big news, but a missing piece of the puzzle was lurking below the ocean's surface. What volume of ice floats on Arctic waters? And how does that compare to previous summers? These are difficult but important questions, because how much ice actually remains suggests how vulnerable the ice pack will be to more warming.

Astronomy / Space Science - Physics - 12.02.2013
Five years of unique science on Columbus
Since Europe's Columbus laboratory module was attached to the International Space Station five years ago, it has offered researchers worldwide the opportunity to conduct science beyond the effects of gravity. A total of 110 ESA-led experiments involving some 500 scientists have been conducted since 2008, spanning fluid physics, material sciences, radiation physics, the Sun, the human body, biology and astrobiology.

Physics - Astronomy / Space Science - 07.02.2013
New Sussex study furthers Einstein's 'theory of everything'
New Sussex study furthers Einstein’s ’theory of everything’
Sussex physicists have taken a small step towards fulfilling Einstein's dream of proving there is only one fundamental force in nature. Following last year's discovery of the Higgs boson particle - the so-called "God particle" that answers how the particles have masses - Xavier Calmet and PhD student Michael Atkins looked at how the Higgs field interacts with gravity.

Health - Astronomy / Space Science - 04.02.2013
Finding the key to immunity
Services Calendar 4 February 2013 Living in space weakens astronauts' immune systems, researchers have discovered. The findings are providing clues on how to tackle diseases on Earth before symptoms appear. Ever since the first humans ventured into space we have known that astronauts can suffer from common infections that would be quickly dealt with by healthy people on Earth.

Astronomy / Space Science - Earth Sciences - 04.02.2013
First evidence discovered that water once dissolved the surface of Mars
Scientists at the University of Glasgow together with the Scottish Universities Environmental Research Centre and the Natural History Museum (London) have discovered the first evidence of water dissolving the surface of Mars. In a paper published in the Meteoritical Society's journal MAPS , the research team outline the results of tests on a 1.7-gram fragment of a Martian meteorite known as Nakhla, which was provided by the Natural History Museum.

Astronomy / Space Science - Physics - 31.01.2013
Gas promises bumper black hole 'weigh-in'
Gas promises bumper black hole 'weigh-in'
A new way of measuring the mass of supermassive black holes could revolutionise our understanding of how they form and help to shape galaxies. The technique, developed by a team including Oxford University scientists, can spot the telltale tracer of carbon monoxide within the cloud of gas (mostly hydrogen) circling a supermassive black hole at the centre of a distant galaxy.

Astronomy / Space Science - Chemistry - 31.01.2013
Urey Hall Chemists Reveal History of Two Mysterious Space Rocks
Two unusual space rocks that survived their fiery falls through Earth's atmosphere have ended up in the Urey Hall chemistry laboratory of Mark Thiemens, whose group identified one as a new class of Martian meteorite that likely originated from the Red Planet's crust. "This meteorite is extremely interesting because it suggests that what we knew about the composition of Mars and how it came to be needs a major adjustment," said Thiemens, dean of the Division of Physical Sciences and a professor of chemistry and biochemistry.

Astronomy / Space Science - Chemistry - 30.01.2013
Stars can be late parents
Using the unique capabilities of ESA's Herschel space observatory, astronomers have accurately 'weighed' a star's disc, finding it still has enough mass to spawn 50 Jupiter-sized planets, several million years after most other stars have already given birth. Proto-planetary discs contain all the raw ingredients for building planets.

Astronomy / Space Science - Physics - 30.01.2013
How planets form: Astronomers weigh a protoplanetary disk with unprecedented accuracy
How planets form: Astronomers weigh a protoplanetary disk with unprecedented accuracy
ANN ARBOR-In a study that gives astronomers new insights into how planets form, research led by the University of Michigan has enabled a dramatically more precise measurement of the amount of dust and gas in the planet-forming disk around a young star.

Astronomy / Space Science - 29.01.2013
When a planet behaves like a comet
ESA's Venus Express has made unique observations of Venus during a period of reduced solar wind pressure, discovering that the planet's ionosphere balloons out like a comet's tail on its nightside. The ionosphere is a region of weakly electrically charged gas high above the main body of a planet's atmosphere.

Astronomy / Space Science - Earth Sciences - 29.01.2013
Researchers develop model for identifying habitable zones around stars
Researchers develop model for identifying habitable zones around stars
UNIVERSITY PARK, Pa. -áResearchers searching the galaxy for planets that could pass the litmus test of sustaining water-based life must find whether those planets fall in what's known as a habitable zone. New work, led by a team of Penn State researchers, will help scientists in that search. Using the latest data, the Penn State Department of Geosciences team developed an updated model for determining whether discovered planets fall within a habitable zone - where they could be capable of having liquid water and thus sustaining life.

Astronomy / Space Science - 29.01.2013
New study of solar system dust shows some is from interstellar space
New study of solar system dust shows some is from interstellar space
A new study by Michael Rowan-Robinson, former Head of Astrophysics at Imperial, and Brian May, who recently completed the PhD he abandoned to become Queen's lead guitarist, has modelled the space dust in the solar system. They conclude that 70 per cent of the dust that is found between the Sun and Mars comes from comets, 22 per cent is from asteroids and around seven and a half per cent comes from outside the solar system, dust from interstellar space.

Life Sciences - Astronomy / Space Science - 25.01.2013
Dung Beetles Follow the Milky Way
You might expect dung beetles to keep their "noses to the ground", but they are actually incredibly attuned to the sky. Indeed, a report in the 24 January Current Biology, a Cell Press publication, shows that, even on the darkest of nights, African ball-rolling insects are guided by the soft glow of the Milky Way.

Astronomy / Space Science - Physics - 25.01.2013
Chameleon pulsar baffles astronomers
Chameleon pulsar baffles astronomers
Using a satellite X-ray telescope combined with terrestrial radio telescopes the pulsar was found to flip on a roughly half-hour timescale between two extreme states; one dominated by X-ray pulses, the other by a highly-organised pattern of radio pulses. The research was led by Wim Hermsen from The Netherlands Institute for Space Research and the University of Amsterdam and will appear in the journal Science on the 25th January 2012.