The Distant Transient Universe: Supernovae, Strong Lenses, and Cosmology
Time-domain astronomy is entering a new era. With JWST, we can now discover and study supernovae in the early universe, while the Rubin Observatory and the Nancy Grace Roman Space Telescope will find rare transients across wide areas and in unprecedented numbers. These complementary facilities are transforming the transient sky into a laboratory for precision astrophysics and cosmology. In this talk, I will show how these observations are opening new ways to study cosmic expansion and probe the physics of the early universe.


