The universe contains strange objects and explosions that
dwarf anything we can produce in an Earth-bound laboratory.
Most of these 'extremes' were only recognized as astronomy
extended its reach beyond the visible light we can see,
across the whole, vastly larger, spectrum, from radio to X-rays.
CfA scientists study these extremes of density, temperature,
magnetic field, and rapid energy release. The type of object
we study include: black holes, pulsars, supernovae, white dwarfs,
neutron stars, and magentars. The results test our understanding
of the underpinnings of modern physics: relativity and quantum
mechanics, and challenge us to discover how such extreme objects
come to exist.