Galaxies like the Milky Way boast more than spirals; they also have feathers, where clumps of new stars are born. Astronomers ...

New data further challenge the best scientific theory of the history and the structure of the universe. But a separate recent ...

The trailblazing Harvard scientist, who documented the dominance of hydrogen and helium in stars, is still inspiring ...

Fluffy strands of cosmic gas and dust illuminated by bright young stars form a beautiful cloudscape in a neighboring nebula.

A European space telescope launched to explore the dark universe has released a trove of new data on distant galaxies.

A European space telescope launched to explore the dark universe has released a trove of new data on distant galaxies.

The DESI experiment shocked cosmologists with a hint that dark energy varies over time. Now, with more data, the conclusions hold up.