Unveiling the 'Ghost' Baryonic Matter

Unveiling the 'Ghost' Baryonic Matter

A team of scientists from the Max Planck Institute for Extraterrestrial Physics has shed light on one of the most elusive components of the universe: the warm-hot intergalactic medium (WHIM). This "ghost" form of ordinary matter, long hypothesized but rarely detected, is thought to account for a significant portion of the universe's missing baryons — the matter that makes up stars, planets, and galaxies.

eROSITA unveils asymmetries in temperature and shape of our Local Hot Bubble

eROSITA unveils asymmetries in temperature and shape of our Local Hot Bubble

Our Solar System dwells in a low-density environment called the Local Hot Bubble (LHB), filled by a tenuous, million-degree hot gas emitting dominantly in soft X-rays. A team led by scientists at the Max Planck Institute for Extraterrestrial Physics (MPE) used the eROSITA All-Sky Survey data and found a large-scale temperature gradient in this bubble, possibly linked with past supernova explosions that expanded and reheated the bubble.

Zoom into the first page of Euclid’s great cosmic atlas

Zoom into the first page of Euclid’s great cosmic atlas

Euclid reveals the first deep view into the cosmos, spanning an area of 500 full moons in the sky.

The cosmic-ray ionization rate in the local Milky Way is ten times lower than previously thought

The cosmic-ray ionization rate in the local Milky Way is ten times lower than previously thought

An international group of astrophysicists, led by MPE scientists Marta Obolentseva, Alexei Ivlev, Kedron Silsbee, and Paola Caselli, have revisited the long-standing problem of evaluating the rate at which cosmic rays ionize gas in the interstellar medium.

Hyper-luminous, Yet Surprisingly Organized

Hyper-luminous, Yet Surprisingly Organized

The galaxy PJ0116-24 lives about 10 billion years ago and appears about 10,000 times brighter in the infrared than our Milky Way. It belongs to a rare population of so-called hyper-luminous infrared galaxies (HyLIRG), which are usually formed by the collision of several galaxies. Members of the Infrared Group at the Max Planck Institute for Extraterrestrial Physics (MPE) including Daizhong Liu and Natascha M. Förster Schreiber, together with researchers from the European Southern Observatory (ESO) and other international institutes, now showed that a HyLIRG can also arise in a massive turbulent rotating disk within a single galaxy, where the gas is organized in a structured way. This finding was made possible through new observations including from the novel ERIS instrument at the ESO Very Large Telescope, built by a consortium also led by the MPE Infrared Group, and strong magnification caused by a massive elliptical galaxy that lies between us and PJ0116-24. This galaxy acts as a gravitational lens stretching PJ0116-24 in an “Einstein ring” and making it appear 17 times brighter.

JWST sheds Light on the Journey of Cosmic Icy Grains

JWST sheds Light on the Journey of Cosmic Icy Grains

Using the JWST, a team of researchers including Paola Caselli and Michela Giuliano from MPE, have probed deep into dense cloud cores, revealing details of interstellar ice that were previously unobservable. The study focuses on the Chamaeleon I region, using JWST’s NIRCam to measure spectroscopic lines towards hundreds of stars behind the cloud.

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ORIGINS Dark Energy Day

Jan 27, 2025
MPE, Giessenbachstrasse, 85748 Garching,

eROSITA - Sieben Röntgenaugen erforschen das Universum

Feb 11, 2025 07:00 PM - 08:30 PM (Local Time Germany)
Muffatwerk, Zellstr. 4 (S-Bahn, Isartor / Rosenheimer Platz)

Galactic Ecosystems Under The Microscope: Lessons From Highly-Resolved Studies

Jul 7, 2025 12:00 AM (Local Time Germany) - Jul 11, 2025 12:00 AM
ESO Headquarters, Garching

Schwarzschild-Fraunhofer Fellows Symposium

Dec 11, 2025 10:00 AM - 12:20 PM (Local Time Germany)
USM, Scheinerstr. 1, München, Room: USM lecture hall and online

Stellar Influence on Exoplanetary Atmospheres: Chemistry and High-Energy Interactions

Dec 11, 2025 02:00 PM - 03:00 PM (Local Time Germany)
MPE, Garching, Room: MPE room 1.1.18b and online

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MPE60 years: May 15th!
On 15 May MPE turned 60! If you want to officially say happy birthday, please check MPE social Media accounts and like, share and comment. You can also send greetings and explain why you like to work at MPE :-)
Reinhard Genzel receives the Nobel Prize for Physics 2020
The Max Planck Director is honored for his observations of the black hole in the Galactic Center
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