Subcategories
Astrophysics
Stellar physics, compact objects, and high-energy astrophysical phenomena.
Cosmology
Origin and evolution of the universe, dark matter, dark energy, and cosmic inflation.
Gravitational Waves
Gravitational wave astronomy, detectors, and multi-messenger astrophysics.
Extragalactic Physics
Galaxies, galaxy clusters, and large-scale structure of the universe.