Astronomy/Space Science

Results 21 - 40 of 42.

Astronomy / Space Science - Physics - 12.06.2018
The True Power of the Solar Wind
The True Power of the Solar Wind
Electrically charged particles from the sun strike moons and planets with great force. The consequences of these impacts can now be explained by scientists from TU Wien. The planets and moons of our solar system are continuously being bombarded by particles hurled away from the sun. On Earth this has hardly any effect, apart from the fascinating northern lights, because the dense atmosphere and the magnetic field of the Earth protect us from these solar wind particles.

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 - Life Sciences - 17.10.2017
Microbes leave
Microbes leave "fingerprints" on Martian rocks
Scientists around Tetyana Milojevic from the Faculty of Chemistry at the University of Vienna are in search of unique biosignatures, which are left on synthetic extraterrestrial minerals by microbial activity. The biochemist and astrobiologist investigates these signatures at her own miniaturized "Mars farm" where she can observe interactions between the archaeon Metallosphaera sedula and Mars-like rocks.

Astronomy / Space Science - 22.02.2017
Four years in space: Austrian BRITE satellites
Four years in space: Austrian BRITE satellites
TUGSAT-1 and UniBRITE have been in space since 2013. During this time 350 stars have been observed, new variable stars discovered, and 12 scientific papers published in international journals. The nanosats of the BRITE mission focus on the brightest, hottest and most massive stars in the immediate neighbourhood of the universe.

Astronomy / Space Science - Continuing Education - 07.11.2016
The birth of massive stars is accompanied by strong luminosity bursts
The birth of massive stars is accompanied by strong luminosity bursts
Astronomers of the Universities of Tübingen and Vienna are investigating the basic principles of the formation of stars "How do massive stars form?" is one of the fundamental questions in modern astrophysics, because these massive stars govern the energy budget of their host galaxies.

Astronomy / Space Science - Physics - 17.03.2016
Austrian nanosats yield first research results
Austrian nanosats yield first research results
TUGSAT-1/BRITE-Austria and UniBRITE, Austria's first satellites in space, celebrate their third birthday. "Astronomy & Astrophysics" publishes three papers with the ESA-missions latest results. Photographic material available for download at the end of the text. . "BRITE stands for BRIght Target Explorer.

Astronomy / Space Science - 05.02.2016
"Cannibalism" between stars
Stars do not accumulate their final mass steadily, but in a series of violent events manifesting themselves as sharp stellar brightening. According to this theory of Eduard Vorobyov from the University of Vienna, stellar brightening can be caused by fragmentation due to gravitational instabilities in massive gaseous disks surrounding young stars, followed by migration of dense gaseous clumps onto the star.

Physics - Astronomy / Space Science - 09.12.2013
Recipe for a Universe
When soup is heated, it starts to boil. When time and space are heated, an expanding universe can emerge, without requiring anything like a "Big Bang". This phase transition between a boring empty space and an expanding universe containing mass has now been mathematically described by a research team at the Vienna University of Technology, together with colleagues from Harvard, the MIT and Edinburgh.

Astronomy / Space Science - Chemistry - 27.09.2013
Chronobiology: Not everything revolves around the sun
Researchers in Vienna shed light on the interplay of a worm's inner clocks For a long time, molecular chronobiology has almost exclusively focused on circadian rhythms that are driven by the changes of day and night and hence follow the daily cycle of the sun. However, especially in the sea, the cradle of evolution, organisms set their pace also according to the moon.

Astronomy / Space Science - 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 Science - 13.09.2012
Summer Rain More Likely over Drier Soils
Where does it rain on a hot day's afternoon? New satellite data show that soil moisture plays an important role. It influences precipitation in a way which is quite different from what models have predicted so far. Summer rain is more likely over drier soil - this is the conclusion scientists have drawn from a detailed analysis of satellite data.

Environment - Astronomy / Space Science - 19.06.2012
Soil Moisture Climate Data Record observed from Space
[ Florian Aigner, Wolfgang Wagner Soil moisture influences our climate. For the first time, long-term data for the whole world is now presented by ESA, the Vienna University of Technology and the Free University of Amsterdam. The future of the world's climate is determined by various parameters, such as the density of clouds or the mass of the Antarctic ice sheet.

Physics - Astronomy / Space Science - 18.06.2012
Black Holes as Particle Detectors
[ Florian Aigner Previously undiscovered particles could be detected as they accumulate around black holes say Scientists at the Vienna University of Technology. Finding new particles usually requires high energies ' that is why huge accelerators have been built, which can accelerate particles to almost the speed of light.

Physics - Astronomy / Space Science - 24.01.2012
Jupiter’s ,,Trojans" on an Atomic Scale
The planet Jupiter keeps asteroids on stable orbits - and in a similar way, electrons can be stabilized in their orbit around the atomic nucleus. Calculations carried out at the Vienna University of Technology have now been verified in an experiment. Planets can orbit a star for billions of years. Electrons circling the atomic nucleus are often visualized as tiny planets.

Physics - Astronomy / Space Science - 17.01.2012
The Perfect Liquid - Now Even More Perfect
Previous theories imposed a limit on how "liquid" fluids can be. Recent results at the Vienna University of Technology suggest that this limit can be broken by a quark-gluon plasma, generated by heavy-ion collisions in particle accelerators. How liquid can a fluid be? This is a question particle physicists at the Vienna University of Technology have been working on.

Physics - Astronomy / Space Science - 18.04.2011
Probing the Laws of Gravity: A Gravity Resonance Method
[ Florian Aigner Quantum mechanical methods can now be used to study gravity: At the Vienna University of Technology (TU Vienna), a measurement method was developed, which allows to test the fundamental theories of physics. The world's most precise measurement methods are based on quantum physics. Atomic clocks or high-resolution magnetic resonance, which is used in medicine, rely on accurate measurements of quantum leaps: A particle excited at exactly the right frequency changes its quantum state ' this is called 'resonance spectroscopy'.

Astronomy / Space Science - Physics - 19.11.2010
Theory of Relativity revisited: New force at large distances
Is there something missing from Einstein's equations' Daniel Grumiller from the Vienna University of Technology is proposing a new model of gravity which could reconcile the theory of relativity with astronomical observation. Vienna (VUT). Einstein revolutionized our understanding of the universe - but until today, some important questions in gravitational physics remain unanswered.

Physics - Astronomy / Space Science - 18.08.2010
Hot stuff: Quark-gluon-plasma explained by black-hole-physics
Vienna (VUT). Particle physics is is seeing revolutionary developments. Baffling connections are emerging between the physics of gravitation and the physics of elementary particles. With completely new methods scientists begin to unravel the strange properties of extremely hot states of matter that are being produced in laboratories such as CERN near Geneva.

Earth Sciences - Astronomy / Space Science - 14.04.2010
Earthquake in Chile causes days to be longer
Since the earthquake in Chile in February 2010, the "Höhere Geodäsie" [Advanced Geodesy] research group at the Institute of Geodesy and Geophysics at the Vienna University of Technology (TU Vienna) has been helping measure the earth on a global scale. First results indicate that the rotational speed of the earth has become marginally slower and days have become longer by 0.3 microseconds.

Earth Sciences - Astronomy / Space Science - 05.03.2010
The ever-changing Earth
Researchers at the Institute of Geodesy and Geophysics at Vienna University of Technology (TU) are investigating the effects of the Earth's atmosphere on our planet's shape, its rotation and its gravitational field. The Earth's atmosphere is not only essential to support human life on Earth; it also affects our planet's shape, its rotation and its gravitational field.

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