Even in the age of sun-observing satellites, astronomers like Jay Pasachoff still seek out total solar eclipses for the tales they can tell about our sun.
According to our best theories of physics, the universe is a fixed block where time only appears to pass.
An experiment claims to have invalidated a decades-old criticism against pilot-wave theory, an alternative formulation of quantum mechanics that eliminates the most baffling features of the subatomic universe.
In his latest book, the Nobel Prize winner Steven Weinberg explores how science made the modern world, and where it might take us from here.