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We are delighted to invite you to the 4th International Summit on Gravitation, Astrophysics, and Cosmology (ISGAC2026), taking place from April 20-22, 2026 in Frankfurt, Germany. This premier international forum will bring together leading experts to discuss the latest advancements in Gravitation, Astrophysics, and Cosmology.

Building on the success of our previous conferences ISGAC2023 in Rome, ISGAC2024 in Florence and the upcoming ISGAC2025 in March-2025 we are excited to continue promoting collaboration and advancements in the field. Let’s come together to celebrate our progress and explore new frontiers in gravitational physics and cosmology.

The topics covered at ISGAC2026 will include Gravitational Physics and Lensing, Wave-Particle Duality, Applied Relativity, Stellar and Solar Physics, Alternative Theories of Gravity, Jet Physics and Neutrino Cosmology. The conference will host distinguished keynote speakers from top universities and industry leaders, who will share valuable