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Astronomy/Space Science



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Astronomy / Space Science - Life Sciences - 04.09.2019
Searching for the Origin of Life across the Universe
Searching for the Origin of Life across the Universe
Researchers from European countries discuss life in the Universe at the University of Vienna Astrobiology is a young, rapidly developing branch of science that seeks to address the question of whether life exists, or has existed, elsewhere in the Universe. It is by nature an interdisciplinary science that explores the origins of life, the conditions, and processes that support or challenge life, the influence of different environmental conditions on preservation and detection of biosignatures of past and present life.

Physics - Astronomy / Space Science - 22.08.2019
Quantum gravity's tangled time
Quantum gravity’s tangled time
The theories of quantum mechanics and gravity are notorious for being incompatible, despite the efforts of scores of physicists over the past fifty years. However, recently an international team of researchers led by physicists from the University of Vienna, the Austrian Academy of Sciences as well as the University of Queensland (AUS) and the Stevens Institute of Technology (USA) have combined the key elements of the two theories describing the flow of time and discovered that temporal order between events can exhibit genuine quantum features.

Astronomy / Space Science - Physics - 24.04.2019
Rapid destruction of Earth-like atmospheres by young stars
Rapid destruction of Earth-like atmospheres by young stars
Researchers show young stars rapidly destroy Earth-like Nitrogen dominated atmospheres The discoveries of thousands of planets orbiting stars outside our solar system has made questions about the potential for life to form on these planets fundamentally important in modern science. Fundamentally important for the habitability of a planet is whether or not it can hold onto an atmosphere, which requires that the atmosphere is not completely lost early in the lifetime of the planet.

Astronomy / Space Science - Physics - 08.10.2018
String Theory: Is Dark Energy even Allowed?
String Theory: Is Dark Energy even Allowed?
A new conjecture causes excitement in the string theory community. Timm Wrase of the Vienna University of Technology has now published much-discussed results on recent new developments. In string theory, a paradigm shift could be imminent. In June, a team of string theorists from Harvard and Caltech published a conjecture which sounded revolutionary: String theory is said to be fundamentally incompatible with our current understanding of "dark energy" - but only with "dark energy" can we explain the accelerated expansion of our current universe.

Astronomy / Space Science - 05.10.2018
The threat of Centaurs for the Earth
The threat of Centaurs for the Earth
Astrophysicists calculate the impact probability and crater size of impacts due to minor bodies The astrophysicists Mattia Galiazzo and Rudolf Dvorak from the University of Vienna, in collaboration with Elizabeth A. Silber (Brown University, USA) investigated the long-term path development of Centaurs (solar system minor bodies which originally have orbits between Jupiter and Neptune).

Astronomy / Space Science - Earth Sciences - 31.08.2018
What's 'up' in space?
What’s ’up’ in space?
The International Astronomical Union has agreed on a new reference frame for directions in space. TU Wien played an important role in developing this new frame. In future, when spacecrafts are sent to other planets or when the rotation of planet Earth is studied, a new reference frame will be used. On 30 August, at the General Meeting of the International Astronomical Union (IAU) in Vienna, the new international celestial reference frame ICRF3 was adopted, allowing for more precise directional specifications in space.

Physics - Astronomy / Space Science - 24.07.2018
No sign of Symmetrons
No sign of Symmetrons
A high-precision experiment led by TU Wien has set its sights on pinpointing the so-far hypothetical "symmetron fields" using the PF2 ultra-cold neutron source at the Institut Laue-Langevin in France. For the existence of symmetrons could provide an explanation for the mysterious dark energy. One thing is certain: there's something out there we don't yet know.

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 - 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 - 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 - 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'.

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