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An X-ray view of Sagittarius A*, the black hole at the center of the Milky Way, and its surroundings, captured by the Chandra Space Observatory
A summary of what we know about the mysterious center of the Milky Way
An article published in the prestigious Reviews of Modern Physics by a team from the APC Laboratory and collaborators summarizes current knowledge about the mysterious core of the Milky Way
Unveiling of the new logo (a stylized blue-purple human silhouette with white stars) and announcement of the new website.
The Cosmos, Science, and Society Center launched its new science outreach website on astrophysics
In 2025, the Paris Center for Cosmological Physics (PCCP) became the Cosmos, Science, and Society Center (CSS). This name change is accompanied by a new logo and a new website. This evolution reaffirms the center’s core mission: a science outreach organization affiliated with the APC laboratory that works to build bridges between fundamental research in astrophysics and civil society. Discover their new website and their initiatives.
Image d'illustration avec un fond cosmique et les contours de la Pologne par-dessus. Le texte : Astrocent: new begiings. International Institute for Particle Astrophysics, Polis Academy of Science. The first of its kind in Central and Eastern Europe
Astrocent becomes the new international institute of the Polish Academy of Sciences
On February 17, 2025, the Polish Academy of Sciences officially established the International Institute for Particle Astrophysics, which operates under the name Astrocent. Based in Warsaw, it is the first institute in Central and Eastern Europe entirely dedicated to particle astrophysics. The APC Laboratory, a partner of Astrocent, will play an important role in this project, whose development is supported by €30 million in European and national funding.
Artist’s illustration of a thermonuclear X-ray burst occurring in a binary system composed of a neutron star (on the left) drawing in matter from a companion star under the influence of its intense gravitational field. Credits: David A. Hardy / SFTC.
Svom Observes a Thermonuclear Explosion on a Neutron Star

Shortly after the start of its scientific operations, the SVOM space mission demonstrated its full potential by detecting a spectacular phenomenon: a thermonuclear X-ray burst from the celestial source 4U 0614+091. This observation marks an important milestone for the mission, showing its ability to study not only distant gamma-ray bursts, but also violent phenomena occurring within our own Galaxy.

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