Dein Suchergebnis zum Thema: Wales

No Phosphine in Venus clouds

https://www.mpg.de/17209676/0716-aero-no-phosphine-in-venus-clouds-151060-x

Measurement data from the James Clerk Maxwell Telescope in Hawaii and the ALMA radio telescope in Chile, published a year ago, contain no evidence of the trace gas phosphine in the clouds of Venus. This is the conclusion of an international team of researchers, including a scientist from the Max Planck Institute for Solar System Research (MPS) in Göttingen, who have now carefully examined the measurement data. Their analysis is a contribution to the scientific discussion about the discovery of phosphine in the atmosphere of Venus, which was reported by British researchers in 2020. The toxic trace gas phosphine is known on Earth as a metabolic product of bacteria and could indicate biological processes in the Venus atmosphere. The new analysis of the data as well as a statement from the British colleagues, appears today in the journal Nature Astronomy.
publication by a group of researchers led by Jane Greaves of Cardiff University, Wales

Demografie: Out of Britain

https://www.mpg.de/10617200/out-of-britain

Bleiben oder gehen? Großbritannien ist vor dem EU-Referendum politisch gespalten. Andreas Edel, Wissenschaftler am Max-Planck-Institut für demografische Forschung und für das Netzwerk Population Europe verantwortlich, pendelt viel zwischen europäischen Städten. Hier schreibt er über seine persönlichen Eindrücke aus London und Brüssel, was Demografen zu einem möglichen Brexit sagen und warum Migrationsforschung ganz oben auf der Agenda Europas steht.
und ihrem Team etwas ganz anderes: Nur vier Prozent der Menschen in England und Wales

The Sun is pretty feeble

https://www.mpg.de/14769465/sun-is-less-active-than-similar-stars

The Sun is an ever-changing star: at times, numerous dark sunspots cover its visible surface; at others, the surface is completely „empty“. However, by cosmic standards the Sun is extraordinarily monotonous. This is the result of a new study presented by researchers under the leadership of the Max Planck Institute for Solar System Research (MPS) in Germany in the upcoming issue of Science. For the first time, the scientists compared the Sun with hundreds of other stars with similar rotation periods and other fundamental properties. Most of them displayed much stronger variations. This raises the question of whether the Sun’s feebleness is a basic trait or whether our star has merely been going through an unusually quiet phase for several millennia.
resort to the stars: Together with colleagues from the University of New South Wales

Sternchemie beeinflusst Messungen der kosmischen Expansion

https://www.mpg.de/14534752/sternchemie-beeinflusst-messungen-der-kosmischen-expansion

Astronomen unter der Leitung von Maria Bergemann (Max-Planck-Institut für Astronomie) haben chemische Untersuchungen an Sternen durchgeführt, die Auswirkungen darauf haben, wie Kosmologen die Expansion unseres Kosmos bestimmen. Mit Hilfe verbesserter Modelle, die zeigen, wie sich die Anwesenheit chemischer Elemente auf das Spektrum eines Sterns auswirkt, fanden die Forscher heraus, dass so genannte Supernovae vom Typ Ia andere Eigenschaften haben als bisher angenommen. Aufgrund von Annahmen über ihre Helligkeit nutzen Kosmologen diese Supernovae dazu, die Expansionsgeschichte des Universums zu rekonstruieren. Angesichts der neuen Ergebnisse ist nun wahrscheinlich, dass diese Annahmen revidiert werden müssen.
Bertrand Plez (Universität Montpellier), Ivo Seitenzahl (Universität New South Wales

A puzzle piece from stellar chemistry could change our measurements of cosmic expansion

https://www.mpg.de/14535346/a-puzzle-piece-from-stellar-chemistry-could-change-our-measurements-of-cosmic-expansion

Astronomers led by Maria Bergemann (Max-Planck-Institute for Astronomy) have performed chemical measurements on stars that could markedly change the way cosmologists measure the Hubble constant and determine the amount of so-called dark energy in our universe. Using improved models of how the presence of chemical elements affects a star’s spectrum, the researchers found that so-called supernovae Type Ia have different properties than previously thought. Based on assumption about their brightness, cosmologists have used those supernovae to measure the expansion history of the universe. In light of the new results, it is now likely those assumptions will need to be revised.
Bertrand Plez (Université de Montpellier), Ivo Seitenzahl (University of New South Wales