Author Archive
Exoplanets’ climate – it takes nothing to switch from habitable to hell
The Earth is a wonderful blue and green dot covered with oceans and life, while Venus is a yellowish sterile sphere that is not only inhospitable but also sterile. However, the difference between the two bears to only a few degrees in temperature. A team of astronomers from the University of Geneva (UNIGE) and members […]
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An astronomical waltz reveals a sextuplet of planets
An international collaboration between astronomers using the CHEOPS and TESS space satellites, including NCCR PlanetS members from the University of Bern and the University of Geneva, have found a key new system of six transiting planets orbiting a bright star in a harmonic rhythm. This rare property enabled the team to determine the planetary orbits […]
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An ammonia trail to exoplanets
With the help of the James Webb Space Telescope, a team of researchers including members from the NCCR PlanetS at the Institute for Particle Physics and Astrophysics, ETH Zurich, measured ammonia in the atmosphere of a cold brown dwarf, showing that the isotopic abundance of ammonia can be used to study how giant gas planets […]
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Mystery of the Martian core solved
Mars’ liquid iron core is smaller and denser than previously thought. Not only is it smaller, but it is also surrounded by a layer of molten rock. This is what ETH Zurich researchers, including NCCR PlanetS project leader Paolo Sossi, conclude on the basis of seismic data from the InSight lander. For four years, NASA’s InSight […]
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Looking out of the bubble
An ambitious space mission could open the way to a better understanding of our heliosphere and of cosmic dust. NCCR PlanetS project leader Dr Veerle Sterken and her team recently published a paper in support of such an ambitious mission which was detailing potential science outcomes for the dust and heliospheric sciences, as well as […]
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Robot Team to Explore the Moon
Swiss researchers are equipping legged robots with scientific instruments to search for minerals and resources on the Moon. One major strength of these robots is their ability to work as a team: even if one robot fails, the mission continues. On the Moon, there are raw materials that humanity could one day mine and use. […]
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Elusive planets play “hide and seek” with CHEOPS
With the help of the CHEOPS space telescope an international team of European astronomers managed to clearly identify the existence of four new exoplanets. The four mini-Neptunes are smaller and cooler, and more difficult to find than the so-called Hot Jupiter exoplanets which have been found in abundance. Two of the four resulting papers are […]
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Weather report: hot scorching storms of sand on exoplanet VHS 1256 b.
Ever had sand hot whip across your face? That’s a soothing experience compared to the volatile conditions discovered high in the atmosphere of planet VHS 1256 b. Researchers using the James Webb Space Telescope proved that its clouds are made up of silicate particles, ranging from fine specks to small grains. Plus, its near-constant cloud cover is […]
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CHEOPS mission extended
After more than three years in orbit, the mission of the CHEOPS space telescope has just been extended. Led by the University of Bern in collaboration with the University of Geneva, CHEOPS is a joint mission of the European Space Agency (ESA) and Switzerland. On March 7th, ESA’s Science Programme Committee has confirmed its continued […]
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Four classes of planetary systems
Astronomers have long been aware that planetary systems are not necessarily structured like our solar system. Researchers from the Universities of Bern and Geneva, as well as from the National Centre of Competence in Research PlanetS, have now shown for the first time that there are in fact four types of planetary systems. In our […]
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