Evolution of the Solar System: Constraints from Meteorites How did our Solar System form and evolve? This new volume edited by D. Hezel, H. Palme, K. Mezger, A. Morbidelli & J. Zipfel, brings together leading experts to explore exactly that.

🔭 How do solar energetic particles travel from the Sun to Mars' surface? This week's International Team is modelling this journey - through the heliosphere & Martian atmosphere - to support future Mars missions & improve radiation risk assessment. Read more: teams.issibern.ch/solarparticl...

🔭 This ISSI Team - led by G. Thomas - is developing new techniques to homogenise large spectroscopic surveys onto a common scale – essential for studying the Milky Way as a whole (e.g. combining Northern & Southern hemisphere data). Discover more teams.issibern.ch/asteroshop/

What do the chemical abundances of distant galaxies tell us about the stars that made them? 🌌🔭 This week at #ISSI, experts including Allison Strom, Danielle Berg, Corinne Charbonnel, Brian Welch, and Antonella Nota are meeting to ponder this question! workshops.issibern.ch/distant-galaxies

Hey #EAS2026 community! If you are in Lausanne this week, stop by the ISSI booth and say 'Hi'! Whether you are curious about the research opportunities, looking for collaborations, or just goodies, come find us on the blue carpet! 🟦 @raducan.bsky.social @fabiocrameri.ch

Our 2025 Annual Report is here, and for the first time, it's fully digital! Dive into all our activities, highlights, and results. 👉 Here you can explore the digital report www.issibern.ch/annualreport...

"Excitation and Dissipation of Kinetic-scale Fluctuations in Space Plasmas" …is the focus of this week's ISSI International Team #612, led by Kristopher Klein and Daniel Verscharen. 🔭

Amina Helmi, member of the ISSI Board of Trustees, receives the 2026 Prize in Astrophysics @kavliprize.bsky.social! This honour is a wonderful recognition of a remarkable scientific journey, from galactic archaeology to mapping dark matter. Warmest congratulations from the ISSI family, Amina! 🏅✨

Incoherent Scatter – An Invaluable Tool in the Field of Space and Plasma Physics For >70 years, incoherent scatter radars have been the gold standard in remote sensing for ionospheric plasma physics and upper atmospheric coupling, yet there is no unified textbook.

🔭 This week we are hosting a Team working on "Active Region Evolution Under the Spotlight, with Unprecedented Coordinated High-Resolution Stereoscopic Observations and Numerical Simulations" led by K. Barczynski (ETH Zurich & PMOD/WRC) @louise-solar.bsky.social teams.issibern.ch/activeregion...

…just saying. 😉 #SatisfyingFollowingAhead

This week at ISSI we are hosting the Forum “Challenges and Advances in Remote Sensing of Coastal Sea Level with Ground-based GNSS-IR.” Bringing together ocean, sea level, and geodetic communities to advance GNSS-IR for improved coastal sea-level monitoring. forum.issibern.ch/remote-sensi...

How are structures in Earth’s magnetic and plasma environment, called the #Magnetosheath, formed and how do they propagate towards the Earth? Ask ISSI International Team #627 led by Martin Volwerk & Tomas Karlsson! 👉 teams.issibern.ch/magnetosheath/ 🔭

ISSI International Team #634, “WAVE-GAP – Watching Atmospheric Variability Evolve in the Global Absence of Satellite Platforms?”, led by M. Bramberger and C. Wright, is identifying present and future gaps in atmospheric wave observations and modelling. 🛰️🔭

Flare ribbon fine-structure: where does it come from and what can it tell us? ISSI International Team #658, led by P. Wyper and J. Dahlin, is investigating the fundamental causes of this fine structure, in order to discover what it reveals about solar eruptions. ☀️🔭

ISSI International Team 616, “Multi-scale Understanding of Surface-Exosphere Connections (MUSEC)“, led by Liam Morrissey and Sébastien Verkercke, brings together theoretical, observational, and experimental expertise to better understand key planetary processes on airless bodies.

Space weather effects appear to level off during extreme solar wind conditions. – Is this a real physical effect, or the result of uncertainties in the measurements? ISSI International Team 654 led by N. Sivadas and M. Walach is working to resolve this issue. #SpaceWeather #SolarWind

ISSI International Team #641 led by @hayesla.bsky.social and Hannah Collier is working to make full use of Solar Orbiter’s Major Flare Campaigns by cataloguing all observed events. Watch this space: teams.issibern.ch/solarflare/

ISSI International Team #649, “Maximizing the Potential of X-ray Polarimetric Data to Understand Accreting Black Holes”, led by Honghui Liu and Cosimo Bambi, aims to provide new insight into the innermost regions around black holes. Read more: teams.issibern.ch/accretingbhs/

🌌 What a night at Astronomy on Tap Bern! Corinne Charbonnel and Mark Gieles, researchers of the ISSI International Team 636, had us listen to the universe's most dramatic events (literally!). Thank you all 💙, and see you at the next one! 🔭 #AstronomyOnTap#Bern#Astrophysics

"Exploring the Distant Universe at Small Scales with Gravitational Lensing" Save the date for the next live webinar with Brian Welch hosted by @antonellanota.bsky.social 🗓️ April 30 (17h CEST) Details: www.issibern.ch/game-changer... #Hubble #JWST #Astronomy #Astrophysics

A new collection — resulting from an ISSI Workshop — brings together interdisciplinary results derived from Cassini data, shedding light on the essential mechanisms governing Saturn's rings and satellites. ➡️ link.springer.com/collections/... #Saturn #Cassini #PlanetaryScience #Planetology

Why do the Sun and Sun-like stars show cyclic magnetic activity, and how do these cycles change as stars evolve? International Team #629 led by T. Zaqarashvili, is tackling this open questions in solar and stellar physics. 🌟 Watch this space: teams.issibern.ch/variabilityi...

"What are the spins of stellar-mass black holes?" 💫 A fascinating question asked and studied by our International Team #660, led by Alexandra Veledina & Andrzej Zdziarski. Check out the team webpage for more information: teams.issibern.ch/stellar-mass... 🔭

The shielding🛡️ of our planet from charged solar particles is not perfect. ISSI International Team 633, "Magnetospheric Cusps: Multiscale Plasma Dynamics and Energy Flows” aims to improve our understanding of plasma dynamics and energy flows on the global magnetosphere-ionosphere system. 🔭

International Team 643 led by Allison Jaynes and V. Lynn Harvey study the contribution of auroral precipitation to ozone changes in the middle atmosphere. Check out this team and track their progress here: teams.issibern.ch/ozonechanges/ 🔭

ISSI International Team 603 led by Anupam Bhardwaj aims to reach 1% precision in stellar luminosities by combining Gaia data with advanced models and multi-wavelength observations. Read more: teams.issibern.ch/expanding/ ✨🔭

We are hosting an ISSI Forum on “Global Navigation Satellite Systems (#GNSS🛰️) for Monitoring Earth Deformation: Challenges in Resolving Subtle Ground Motion in Climate and Tectonics”, which aims to quantify detectability limits of related deformation signals. More: forum.issibern.ch/gnss-monitor...

📢 ISSI is hiring a Director of Heliophysics or Planetary Science (30%). A part-time leadership role for an internationally recognised scientist > shaping our scientific portfolio in Bern from October 2026. Deadline: 4 May 2026 👉 issibern.ch/job-posting-director-heliophysics-or-planetary-science/

Are the products of star formation independent of the properties of the star-forming environment? This week at ISSI, we are hosting International Team 639 led by M. Guarcello to address this key question in astrophysics. Stay tuned! ✨🔭