Author Archive
Celebrating two decades of SPHERE challenges and achievements
Reaching new heights with 100 consortium publications including the early exoplanet demographics release. The SPHERE (Spectro-Polarimetric High-contrast Exo-planet REsearch) planet imager(1), currently installed and operating at the ESO Very Large Telescope in Chile, aims at imaging and characterizing giant exoplanets and planet-forming disks around stars close to the Sun. This project represents an incredible scientific, […]
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NIRPS spectrograph delivers its first images in Quebec
The NIRPS spectrograph optical components has been successfully integrated and aligned into its cryogenic vacuum chamber and delivered its first images in August in the Université Laval’s laboratory. This is an important step before the instrument being installed on the 3.6-m ESO telescope in La Silla, Chile and joining the well-known high-resolution spectrograph HARPS to […]
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First picture of a planetary system around a Sun-like star
Out of the 4300 exoplanets that have been detected to date, only a few dozen have been detected thanks to direct imaging, i.e. we have been able to physically see a planet around its star in an image. Indeed the star is so bright compared to the planets that it is necessary to use indirect […]
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Aerosuisse Award for the CHEOPS team
The Aerosuisse 2020 Award was presented to the CHEOPS satellite team at the Aerosuisse Annual General Meeting held at Geneva Airport on September 11 to mark its 100th anniversary. The award recognizes the success of the first CHEOPS mission carried out in partnership between the European Space Agency (ESA) and Switzerland. Under the direction of […]
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Art and space
#InspiredByOtherWorlds, an “Art contest” for all launched by Europlanet This year and for the first time, the European congress dedicated to exoplanets (which took place in Geneva last year) will take place online, as a consequence of the health crisis. On this occasion the Europlanet society (#EPSC2020) invites schools and space enthusiasts of all ages […]
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Three years of HARPS-N solar data to help detecting “Earth 2.0”
In order to better characterize the noise introduced by stars when searching for new exoplanets, five years ago the HARPS-N spectrometer, mounted on the Telescopio Nationale Galileo, was equipped with a small dedicated solar telescope. The data acquired by this telescope during the first three years of observations – collected every five minutes on all […]
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Three Earth-like planets identified in two planetary systems
PlanetS astronomers associated with an international team have estimated the density of the planets in two planetary systems. Discovered by the Kepler satellite, K2-32 and K2-233 are planetary systems with 4 and 3 planets respectively. The diameters of the planets have been measured by Kepler thanks to the transit method which uses the obscuration of […]
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ESPRESSO confirms the existence of an exo-Earth 4 light-years away
An international team of experts, including researchers from the NCCR PlanetS, has confirmed the existence of the Proxima b extrasolar planet using measurements from the Swiss-built ESPRESSO spectrograph. The existence of a planet the size of Earth around the closest star in the solar system, Proxima Centauri, has been confirmed by an international team of scientists […]
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Six planets (almost) in rythm
An international team lead by researchers of PlanetS and the University of Geneva has discovered a six-planets system. Almost visible to the naked eye in the Draco constellation, the star HD 158259 has been observed for the last seven years by astronomers using the SOPHIE spectrograph. This instrument, installed at the Haute-Provence Observatory in the […]
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Editorial
Living in the days of the Coronavirus is not easy. As many aspects of society shut down in an effort to slow down the progression of the virus, it is difficult to maintain scientific activities. No lectures or colloquia anymore, conferences and schools are cancelled, observatories are restricting operations… Business as usual is no more. […]
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