Results 81 - 100 of 205.
Astronomy / Space Science - Physics - 22.12.2020
How Nearby Galaxies Form Their Stars
How stars form in galaxies remains a major open question in astrophysics. A new UZH study sheds new light on this topic with the help of a data-driven re-analysis of observational measurements. The star-formation activity of typical, nearby galaxies is found to scale proportionally with the amount of gas present in these galaxies.
Astronomy / Space Science - Environment - 16.12.2020
A pair of lonely planet-like objects born like stars
An international research team led by the University of Bern has discovered an exotic binary system composed of two young planet-like objects, orbiting around each other from a very large distance. Although these objects look like giant exoplanets, they formed in the same way as stars, proving that the mechanisms driving star formation can produce rogue worlds in unusual systems deprived of a Sun.
Astronomy / Space Science - 09.12.2020
Spiders in space: without gravity, light becomes key to orientation
Humans have taken spiders into space more than once to study the importance of gravity to their web-building. What originally began as a somewhat unsuccessful PR experiment for high school students has yielded the surprising insight that light plays a larger role in arachnid orientation than previously thought.
Astronomy / Space Science - 27.10.2020
The cosmic network feeds early galaxies
The galaxies in the early universe are much more mature than astrophysicists first thought: their existence at such an early stage is due to their interactions with the cosmos. The first galaxies were formed 200 million years after the birth of the universe. These galaxies accumulated the vast majority of the stars, dust particles and metals they consist of between one and three billion years after the Big Bang, a crucial period for our understanding of how the galaxies were formed.
Astronomy / Space Science - Environment - 15.10.2020
Two planets around a red dwarf
The -SAINT-EX- Observatory, led by scientists from the National Centre of Competence in Research NCCR PlanetS of the University of Bern and the University of Geneva, has detected two exoplanets orbiting the star TOI-1266. The Mexico-based telescope thus demonstrates its high precision and takes an important step in the quest of finding potentially habitable worlds.
Astronomy / Space Science - Environment - 08.10.2020
Vaporised metal in the air of an exoplanet
An international team of researchers led by the National Centre of Competence in Research PlanetS of the University of Bern and the University of Geneva studied the atmosphere of the ultra-hot exoplanet WASP-121b. In it, they found a number of gaseous metals. The results are a next step in the search for potentially habitable worlds.
Astronomy / Space Science - Physics - 21.09.2020
Comet Chury’s ultraviolet aurora
On Earth, auroras, also called northern lights, have always fascinated people. An international consortium involving the University of Bern has now discovered such auroras in the ultraviolet wavelength range at comet 67P/Churyumov-Gerasimenko, Chury for short. This phenomenon was detected thanks to the analysis of data from the European Space Agency ESA's Rosetta mission.
Astronomy / Space Science - Physics - 04.09.2020
Surprise on Mars
NASA's InSight mission provides data from the surface of Mars. Its seismometer, equipped with electronics built at ETH Zurich, not only records marsquakes, but unexpectedly reacts to solar eclipses as well. When the Martian moon, Phobos moves directly in front of the sun, the instrument tips slightly to one side.
Astronomy / Space Science - Earth Sciences - 28.08.2020
Space debris observed for the first time during the day
Researchers at the University of Bern are the first in the world to succeed in determining the distance to a space debris object using a geodetic laser in daylight. The distance was determined on June 24, 2020 at the Swiss Optical Ground Station and Geodynamics Observatory Zimmerwald. The number of measurements can be multiplied thanks to the new possibility of observing space debris during the day.
Astronomy / Space Science - Physics - 20.08.2020
The discovery of the first galaxy emitting "extreme" ultraviolet radiation could help to better understand how the cosmic era known as the "Dark Ages" came to an end more than 13 billion years ago. Thanks to the Indian satellite AstroSat, an international team, including astronomers from the University of Geneva, has detected the first galaxy, called AUDFs01, emitting "extreme" ultraviolet radiation, i.e. highly energetic (with a wavelength of about 60 nanometres, or billionths of a metre).
Astronomy / Space Science - Materials Science - 19.08.2020
New instrument for the search for life in space
Researchers at the University of Bern have developed the highly sensitive instrument ORIGIN for future space missions, which can detect minute traces of life. Space agencies such as NASA have already expressed interest in testing ORIGIN for future missions. For example, the instrument could be used for missions to the icy moons Europa (Jupiter) and Enceladus (Saturn).
Astronomy / Space Science - 18.08.2020
New tool helps interpret future searches for life on exoplanets
One way to determine whether there is life on another planet is to look for biosignatures in the light that is scattered off its atmosphere. Scientists at EPFL and University of Rome Tor Vergata have developed an original model that interprets the results of that analysis. Is there life on a distant planet? One way astronomers are trying to find out is by analyzing the light that is scattered off a planet's atmosphere.
Astronomy / Space Science - Physics - 28.07.2020
A dead star emits a unique mixture of radiations
An international collaboration between ground-based and orbiting telescopes is shedding light on one of the mysteries of the universe. The alert was issued by ESA's Integral Space Observatory, whose scientific data are processed at the University of Geneva. An international network of telescopes, of which Integral, the high-energy space observatory of ESA (European Space Agency), is a part, has detected a unique mixture of radiation from a dead star in our galaxy.
Astronomy / Space Science - 20.07.2020
Astrophysicists fill gaps in the history of the Universe
An international consortium of scientists has analyzed, as part of a vast program of cosmological surveys, several million galaxies and quasars, thus retracing a more continuous history of the Universe and offering a better understanding of the mechanisms of its expansion. The latest 6 year-long survey called eBOSS was initiated, and led in part, by EPFL astrophysicist Jean-Paul Kneib.
Astronomy / Space Science - Environment - 01.07.2020
First exposed planetary core discovered
Researchers led by the University of Warwick have discovered the first exposed core of an exoplanet, which provides an unprecedented glimpse inside the interior of a planet. Christoph Mordasini from the University of Bern is leading the theoretical interpretation of this discovery. The newly discovered exoplanet TOI 849 b offers the unique opportunity to peer inside the interior of a planet and learn about its composition.
Physics - Astronomy / Space Science - 17.06.2020
Surprising Signal in Dark Matter Detector
When analyzing data from the XENON1T detector for dark matter, a signal excess was observed. The UZH researchers do not yet know for sure where this unexpected signal comes from. They say the origins could be relatively banal, but they could also indicate the existence of new particles or hitherto unknown properties of neutrinos.
Astronomy / Space Science - Earth Sciences - 08.06.2020
First global map of rockfalls on the Moon
A research team from ETH Zurich and the Max Planck Institute for Solar System Research in Göttingen counted over 136,000 rockfalls on the moon caused by asteroid impacts. Even billions of years old landscapes are still changing. In October 2015, a spectacular rockfall occurred in the Swiss Alps: in the late morning hours, a large, snow-covered block with a volume of more than 1500 cubic meters suddenly detached from the summit of Mel de la Niva.
Astronomy / Space Science - 28.05.2020
Confirmation of Earth-sized planet around the nearest star
The existence of an Earth-sized planet around the nearest star in the solar system, Proxima Centauri, has been confirmed by an international team of scientists including researchers from the University of Geneva. The results, published in the journal Astronomy & Astrophysics, reveal that the planet in question, Proxima b, has a mass of 1.
Physics - Astronomy / Space Science - 23.04.2020
A major step towards the explanation of the matter-antimatter asymmetry
The international T2K Collaboration has published results showing the strongest evidence to date implying the breaking of the symmetry between matter and antimatter in so-called neutrino oscillations. This is a major step towards the understanding of the dominance of matter over antimatter in the Universe.
Astronomy / Space Science - Environment - 16.04.2020
CHEOPS space telescope ready for scientific operation
The CHEOPS space telescope has exceeded scientists' expectations for accuracy. CHEOPS has reached its next milestone: Following extensive tests in Earth's orbit, some of which the mission team was forced to carry out from home due to the coronavirus crisis, the space telescope has been declared ready for science.