Astronomy

A look back at the Sloan Foundation’s successful 25-year partnership with the Sloan Digital Sky Survey.

How the emptiness of the void got filled.

Even as the solar eclipse was mesmerizing millions, astronomers were training their space- and land-based telescopes on a far more violent astrophysical event.

Scientist Fran Bagenal on what’s next for space exploration.

How to measure the Earth with shadows.

Astronomers thought that all Type Ia supernovas shine with the same brightness, making them incredibly useful cosmic yardsticks. But uncertainty over what causes these explosions has led researchers to reconsider their assumptions.